At first I thought aquascaping was complicated and expensive, until I finally took the plunge and realized: what makes you fail isn't the equipment, it's the setup order and small habits. For those of you just starting out, I've summed up the most important things from my own experience.
The most common cause of failure is rushing. After arranging the substrate, hardscape, and plants, don't immediately add lots of fish. Cycle the aquarium first for 2–4 weeks until a colony of beneficial bacteria has formed; otherwise the water gets cloudy, ammonia rises, and fish die. Start with low-maintenance plants like Anubias, Java Fern, Java Moss, and Cryptocoryne — avoid carpeting plants like HC Cuba for now, since they need CO2 and strong light.
Six to eight hours of light a day is enough. I used to leave the lights on for a long time so the plants would grow faster, and ended up with an algae explosion instead. Run the filter 24 hours a day, and don't rinse biological media with tap water, because chlorine can kill the beneficial bacteria — use old aquarium water instead. Change 20–30% of the water every week.
For substrate I used aqua soil because it's convenient, and I built the back higher than the front to create a sense of depth. The budget doesn't have to be big either: a 30 cm low-tech setup without CO2 can start from around five hundred thousand rupiah.
What I enjoyed most wasn't the end result but the process — watching the plants start to grow, the water getting clearer, the ecosystem slowly stabilizing. Don't be afraid if your first tank fails; almost every aquascaper learned from exactly that.
Source: Aquair Indonesia
I did not expect to be excited about undergravel filters in 2026, but a recent write-up from Aquarium Co-Op made a good case for them. They were once standard in fish rooms and shops, then faded as aquascapers moved to canisters, internal filters and hang-on-backs that allow delicate aquasoil and fine sand.
The idea is simple. An uplift tube, driven by an air pump, pulls water down through gravel and over a grid of plates, so the whole floor of the tank becomes a surface for beneficial bacteria. Debris gets trapped in the gravel, and the flow is gentle, which the article says suits long-finned bettas, fry and shrimp. Maintenance is basically a normal gravel vacuum, and the plastic air stones resist clogging.
The part that surprised me was planted tanks. The author argues the old rumor that undergravel filters and plants do not mix is wrong, provided the substrate is suitable. Moving oxygenated, nutrient-rich water past the roots can help prevent root rot. The caveat is that big root feeders like Amazon swords can anchor themselves into the plates, so place them where you will not need to move them. The limit is that these filters need gravel of roughly 5 mm or larger, and cannot be used with sand, soil or other fine substrates.
For setup, you need an air pump, airline tubing and a check valve so water does not siphon out when the power fails. Plates fit together by dovetail joints, and 1 to 2 inches of gravel over the whole plate area is recommended. For a gravel-based planted tank or a big fish room, I think this is worth a second look.
Source: Aquarium Co-Op
Choosing a CO2 system is one of the first hard decisions when setting up a planted aquarium, and I found a guide that sums it up pretty well. It lays out three levels: homemade, semi-professional and professional.
Homemade, with yeast and sugar or with citric acid and baking soda, is cheap and easy to put together, which is why it is the most common choice for beginners. Its drawback is that it cannot be turned off before the photoperiod ends, so it also runs at night, when plants are not using it. The semi-professional setup adds a solenoid valve, a timer and a bubble counter, so it switches on and off by itself and the gas lasts almost twice as long, although you still have to remake the mix every time it runs out. The pressurized system is the safest and most automated, and depending on tank size it can last close to a year, but its cost is high, so it is not the best option for someone just starting out.
What caught my attention most is the part about "liquid CO2". According to the guide, these products contain glutaraldehyde, and the bacteria in the filter and substrate break it down, releasing very little organic carbon, between 5 and 10 percent of what a real gas system would give. Its real effect is that of an algaecide, useful for localized applications with a syringe on algae such as brush algae or staghorn algae.
My take: starting with something simple and saving up for a pressurized system seems like a sensible path, and being wary of easy promises.
Source: Acuarios Plantados
Phyllanthus fluitans, known as red floater or Red Root Floater, is one of those plants that change the look of an entire aquarium just by covering the surface. It is native to tropical parts of South America and abounds in the Magdalena River basin in Colombia, where it lives in slow or stagnant water in direct sun. According to the article's data sheet, its difficulty is medium, it grows fast and needs high light to bring out the red tones.
What I liked most is how it explains the colour. In low light the leaves are flat and very pale green; with good lighting they thicken, become concave and turn red, which the text presents as protection against the sun. Redness is also more intense when there is a nitrogen deficiency, so the plant works almost as an indicator of the water balance.
It also plays a practical role against algae. Floating and taking in air directly, it grows faster than submerged plants and absorbs excess fertiliser and fish waste, depriving algae of food. It does need a calm surface and plenty of light to look its best.
The article does not go into CO2, temperature, pH or dosing, so it is worth supplementing with other sources before planning a design that depends on it. Even so, as a composition idea – a red layer floating over a green landscape – I find it a very attractive combination for a planted aquarium.
Source: Acuarios Plantados
Anyone who keeps an aquarium has probably heard that fish have a three-second memory. I read a breakdown of this myth, and it turned out more interesting than I expected. According to the author, there is no scientific evidence behind the "three seconds", and it's hard to find an experiment that established it for goldfish. Versions of the claim even mention two, ten and thirty seconds, which is suspicious in itself.
Fish can hold information for days, months, and sometimes longer. The article gives an example: rainbowfish were trained to find an escape route in a special apparatus, and 11 months later they still did it faster than at the start. Goldfish were trained to swim exactly 70 centimeters along a long tank, and after the cue was removed they kept judging the distance quite accurately from the surrounding space.
What struck me most was the part about owners. We can't say with confidence that every pet fish recognizes its owner's face, but archerfish in a well-known experiment learned to pick a familiar face out of dozens of images. Most likely, aquarium fish remember silhouettes, movements and feeding times. Goldfish were conditioned to receive food at a set hour, and they became active before feeding time for several days even after the feeder stopped delivering food.
My takeaway is simple: fish are smarter than we usually assume, so it's worth making the tank interesting for them, not just pretty for us.
Source: Hi-News.ru
Algae eaters are handy for cutting down the scrubbing between maintenance sessions, but Aquarium Co-Op is clear that they do not completely replace other methods of algae control. Their guide sorts the options by tank size, which I found a practical way to think about it.
For small tanks the suggestions are Amano shrimp, pinocchio shrimp and nerite snails, with ramshorn and bladder snails as helpful cleanup crew that often hitchhike in on live plants. In tanks of roughly 20 to 40 gallons, platies and mollies pick at filamentous algae and detritus, while otocinclus, stiphodon gobies and panda garras suit tanks with lots of surface algae. In 40 gallons and up, the Siamese algae eater is the classic active choice, and rosy barbs are a hardy schooling fish that eats hair algae.
The caveats are worth reading. Amano shrimp and nerite snails need mineral supplements for shells and molting, and nerites suffer shell erosion in low pH, so keep pH stable above 7.0. Otocinclus should be kept in a school at pH 6.0 to 7.5 and mostly eat surface algae and biofilm, not hair algae. Rosy barbs are semi-aggressive, and juvenile Siamese algae eaters can outgrow a small tank.
The guide also suggests identifying the type of algae first, feeding sinking pellets or wafers so the animals do not starve, and offering driftwood and catappa leaves. Choose a species that will fit the tank for its whole life, and have a backup plan. Personally I like that the advice is cautious rather than promising a miracle cleaner.
Source: Aquarium Co-Op
I read a guide on the telescope goldfish, also called the bubble-eye, and found it useful for anyone who falls for one at the store. The telescope is a variety of the common goldfish (Carassius auratus) with eyes that stick out from the head, selected by breeders in China and Japan over centuries. The eyes usually start to bulge at around three to six months of age.
The core point of the article is that big eyes do not mean good vision. Breeding prioritized looks, and the result is a fish that sees worse than a common goldfish, bumps into decorations, and takes longer to find food. So feeding needs patience: use slow-sinking pellets instead of flakes, soak them for a minute or two before offering, and always feed in the same corner of the tank.
Another tip that caught my attention concerns tank mates. Fast fish such as common goldfish, comets and barbs eat everything before the telescope finds the first pellet, and the result can be slow malnutrition. Round-bodied, slow-swimming varieties such as ryukin, oranda and lionhead get along much better. And since goldfish are cold-water fish, they don't mix well with betta, guppies or tetras.
Decorations should be smooth and rounded, with no sharp-edged plastic plants or pointed rocks, and it's worth covering the filter intake with mesh or sponge. The guide's rule is practical: if a decoration would hurt your hand, it will hurt his eyes. If an eye gets injured, remove the cause, improve the water, and watch him for a few days.
Source: Mundo Aquário
Live plants soak up harmful waste compounds, give fish and invertebrates places to hide, and simply make a tank look better. Aquarium Co-Op put together a short checklist for choosing plants that will actually thrive, and I think it is a good one to run through before heading to the store.
Start with size. An Amazon sword can reach 12 to 20 inches, so it belongs in a large tank, while Cryptocoryne parva stays around 2 to 3 inches and grows slowly, which suits small tanks and awkward corners. Mixing foreground, midground and background plants gives a more natural layout.
Next comes light and CO2. Beginners are advised to start with low-light plants such as anubias, crypts and ferns, which are the most forgiving. High-light plants that want CO2 are better left to experienced hobbyists, and CO2 injection itself is optional.
Fertilizer matters too. Slow growers need an all-in-one fertilizer once or twice a week, while fast stem plants need more, sometimes daily in dense tanks. Swords and bulb plants like root tabs. The article warns that skipping more than one dose in a row can cause deficiencies, and inconsistent dosing can invite algae.
Water parameters get their own section: above pH 7.8 with hard water there is less dissolved CO2 available, and below pH 6.5 in soft water plants can lack calcium and magnesium. Finally, check whether your fish eat plants. Anubias and ferns hold up to herbivores, while delicate stems, swords and crypts do not, and goldfish are notorious plant eaters.
What I appreciate most is the closing reminder that mistakes are part of learning a planted tank.
Source: Aquarium Co-Op
Those who love freshwater fish rarely know the Rhône streber, and that is exactly what made me want to read this article. Zingel asper seldom exceeds 20 centimeters, lives an average of three to four years, and spends the day motionless, pressed against gravel bottoms, before hunting insects and their larvae at dusk.
Its status is striking: it is endemic to the Rhône basin and lives nowhere else on the planet. Since 1996, the International Union for Conservation of Nature has listed it as critically endangered. Its range shrank from roughly 2,200 km of waterways at the start of the 20th century to only 240 km around 2010-2012, a loss of about 90%.
The article points to three causes: dams and artificial channels that fragment populations and erode their genetic diversity, water pollution from fertilizers and chemical residues, and warming water, even though the species prefers fast, well-oxygenated currents. Two national action plans, in 2011 and 2012, enabled the reintroduction of 22,000 fry into the Drôme, among other things. It can still be found in the Loue, the Ardèche, the Drôme, the Durance and the Buëch.
For a community passionate about aquarium keeping, I think it's worth remembering that the health of fish starts with the health of rivers. A fish that demands cool, clean, oxygen-rich water tells us a lot about what we should watch for in our own tanks.
Source: Sciencepost
I often see beginners buy plants and fish before they know the order of the work. Liputan6 has just published a simple aquascape guide that I think is neat, and its core point is the order: substrate first, hardscape second, plants third, and only then water and equipment.
The equipment doesn’t have to be excessive. You need a glass tank of 20 to 40 cm, Malang sand or silica, a base fertilizer, stones such as andesite or lava rock, driftwood soaked until it no longer floats, a small filter, an LED light, and long tweezers. Spread the base fertilizer first, then add sand about 3 to 5 cm deep. The largest stone, the focal point, should go about a third of the way across the tank, not in the middle.
The beginner plant list makes sense: java moss, anubias nana, vallisneria, cryptocoryne, bucephalandra, rotala rotundifolia, and dwarf hairgrass. One detail I remember: with anubias and vallisneria, don’t bury the rhizome in sand, because it can rot and the plant can die within a few weeks. Keep the arrangement short at the front and tall at the back.
After filling the tank slowly, run the filter for 24 hours before moving on, and keep the light on for about 8 to 10 hours a day. According to the article, the layout looks tidy within 2 to 4 weeks, you change 20 to 30 percent of the water each week, and CO2 is not required at the start. You can also set it up without fish first so the plants stabilize.
The best part, for me, is the list of upgrades to add later, such as DIY CO2, a fuller-spectrum light, and then small fish like neon tetras. If the water turns green, the cause is usually too much light or leftover fertilizer. Patience at the start really does give better results.
Source: Liputan6.com
I read with interest the first article in a series on natural aquariums. It starts at the bottom, and in particular with the soil, which in this article is not simply a store of nutrients but can become one of the most active environments in the whole tank, if it is designed to be colonized by roots and microorganisms.
The first point is that not every soil is suitable. The right one is a simple mix, made mostly of peat and mature compost, with no added fertilizers. Perlite, coconut fiber and products enriched for horticulture should be avoided. In the first weeks the organic matter releases humic compounds and tannins, and the water can turn amber: that is why water changes, roughly every one to two weeks, serve to help stabilization and not to fight the soil. The article also suggests soaking it first in a separate container, changing the water periodically.
The part I liked most concerns roots. If the bottom stays compact and is not penetrated much, oxygen-poor zones can form in the deeper layers. When roots do penetrate, they form a rhizosphere where plants and microorganisms interact, and the roots can transfer oxygen to the substrate. That is why many rooting plants are needed from the start.
Finally, the author makes clear that soil alone is not enough: stability comes from the combination of substrate, plants, filtration, light and feeding, and reducing interventions does not mean stopping maintenance. A very good starting point for anyone who wants a more balanced aquarium.
Source: AcquaPortal
