Planted Aquarium Setup Checklist for New Tanks
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A planted aquarium checklist keeps a new tank from stalling on small details, so this one walks through substrate, lighting, CO2, fertilizer, plant choice, cycling and routine care in the order you will meet them. The care points come from the Tropica plant-care page, the Wikipedia planted-aquarium overview and the Seachem Stability page. The light examples come from four Amazon listings, using only what those listings state.
Quick answer
- Lay at least 3 to 4 cm of gravel as substrate, per the Tropica page.
- Pick a full-spectrum light and put it on a timer.
- Plan fertilizer and CO2 before planting, and dose so the plants use it, since leftover nutrients feed algae.
- Cycle the tank before relying on it; ask a vet or aquatic shop about fish health.
Step 1: Choose the tank spot and equipment
Decide where the tank goes before you buy plants. The Wikipedia overview notes that some aquarists place a tank near a north- or northeast-facing window and skip artificial light to avoid harsh direct sun. Most setups use a lamp instead, so leave room for a mount, a power outlet and a timer. Filtration is also on the list, because the overview says a filter is needed to keep a closed system stable. For filter ideas, the shop’s post on canister filters for aquariums compares several. If fish will go in, a heater matters too, and the Hagen Marina betta submersible heater post covers one listing.
Step 2: Substrate
The Tropica page says substrate acts as a nutrient reserve for roots, that any gravel type and colour works, and that you should cover the substrate with at least 3 to 4 cm of gravel. It says the effect is long-term. It also describes an optional aquarium soil, a Japanese volcanic granulate that lowers KH and pH and helps plants absorb nutrients, and notes it requires regular water changes during the first 4 weeks. The Wikipedia overview adds that laterite-based substrates can supply some nutrients, that the Walstad method uses soil in place of gravel, and that dark substrates help create a canopy effect in jungle-style tanks.
Checklist items: choose gravel or soil, measure the depth, rinse the material, and decide whether you want a nutrient-rich base.
Step 3: Lighting
The Wikipedia overview suggests a full-spectrum light, typically about 2 to 4 watts per gallon (0.5 to 1 watt per litre), and says to run lights on a timer so plants follow a consistent daily cycle. Four listings show how different lights handle that. Their facts below are the listing text only.
| Light | Mount | Wattage | Notable features from the listing | Warranty |
|---|---|---|---|---|
| Fluval Plant 3.0, 15-24 in | Extendable brackets | 22 W | Programmable 24-hour cycle, six band waves, 120-degree dispersion | 3 year limited |
| hygger 18W 24/7 | Extendable bending bracket | 18 W | Sunrise, daylight, moonlight and DIY modes, timer, memory function | 2 year |
| hygger clip-on 24/7, HG990 | Clip, tank walls under 0.9 in thick | 14 W | 817 lumens, color rendering index 85, 6, 10 or 12 hour timer | 2 year |
| WEAVERBIRD 6W clip | Clip, max 6 mm glass | 6 W | 600 lumens, 8000 K, for 8 to 15 inch tanks | Not stated |
Fluval Plant 3.0
The listing describes a 22 watt LED with a programmable gradual 24-hour cycle (sunrise, midday, sunset and night) and six band waves for full spectrum results. It lists optional presets such as Lake Malawi, Tropical and Planted, 120 degree dispersion and extendable mounting brackets for various tank widths. The control method field reads App, with Bluetooth connectivity. The recommended use is lighting and support for growing aquatic plants in freshwater aquariums. It is sized for 15 to 24 inch tanks.
hygger 18W 24/7 light
The listing describes a default 24/7 mode with orange sunrise from 6 am to about 8 am, white until about 10 pm and blue moonlight for roughly 50 minutes, then off. A DIY mode sets time (6, 10 or 12 hours), five brightness levels and several colors, and the light ramps over 15 minutes. It lists a power-off memory function and a remote. The recommended uses read Plant Growth and Decoration.
hygger clip-on 24/7 light
The same mode set in a clip design. The listing says the clip fits tank walls under 0.9 in thick, the body can be mounted horizontally or vertically, and the adapter is separable. It lists 14 watts, 817 lumens, a color rendering index of 85 and 68 light sources.
WEAVERBIRD 6W clip lamp
The simplest of the four. The listing says 12 LEDs, 6 W, 600 lumens, 8000 Kelvin, a US plug at 110 V, suitable for 8 to 15 inch tanks with glass up to 6 mm thick, no drilling or cutting. The listing says it helps plants thrive, but it gives no plant-specific features beyond full-spectrum lighting.
For a wider comparison, see how to pick the best planted aquarium light.
Checklist items: choose a light that fits your tank length, mount it, set a timer and adjust over the first weeks.
Step 4: CO2 and fertilizer
The Tropica page calls CO2 the main nutrient for plants. It recommends its System Bio for starter tanks up to 60 L and System Nano for nano tanks. It says your CO2 needs should be determined exactly. For fertilizer, it says its Premium Nutrition supplies micro nutrients and is recommended for all planted aquariums, while Specialised Nutrition adds macro nutrients for tanks with many plants. Both are liquids dosed into the water regularly. For large, fast-growing plants it describes nutrition capsules pressed 3 to 4 cm into the gravel next to the roots with tweezers.
The Wikipedia overview says CO2 can come from a homemade yeast-sugar system, which is cheap but needs frequent refreshing, or a pressurized tank that is steadier but must be refilled. It says most serious aquascapers use liquid or tablet fertilizers, and that you should dose so plants use all of it, because leftover nutrients feed algae.
Checklist items: decide on CO2 or none, pick a liquid fertilizer, and record the dose so you can adjust.
Step 5: Choose and plant the plants
Wikipedia describes three broad styles. Dutch style uses fine, feathery plants such as Limnophila aquatica and Hygrophila, with red accents like Alternanthera reineckii. Nature style uses low, small-leaved plants such as Glossostigma elatinoides, Eleocharis, Riccia fluitans and Java moss. Jungle style uses bold plants such as Echinodorus bleheri, Anubias and Vallisneria americana, plus floating plants. The Tropica page says you need scissors and tweezers for planting and for weekly trimming, and the overview says plants can be tied in place with thread. It also advises quarantining new plants and disinfecting them with diluted hydrogen peroxide or bleach to remove algae, snail eggs or worms.
A related post on the background for a planted tank, best aquarium background for a planted tank, helps with the finishing look.
Checklist items: pick a style, quarantine the plants, plant with tweezers and trim in the first weeks.
Step 6: Cycle the tank
The Wikipedia overview does not cover cycling and points readers to a dedicated fishkeeping guide. The Seachem Stability page describes a bacterial product that establishes the biofilter quickly in freshwater and marine tanks and helps prevent new tank syndrome. For a new tank it says to add one capful (5 mL) per 40 L (10 US gal) on day one, then one capful per 80 L (20 US gal) daily for 7 days. For fishless cycling it says to add a pinch of food daily until ammonia is detected, then stop and let the bacteria establish. Treat this as one manufacturer’s method, not a universal rule.
Checklist items: choose a cycling method, test water as it settles, and add fish only when the tank is ready. For fish health concerns, ask a vet.
Step 7: Routine care
Per the overview, regular water changes lower nitrates, since excess nutrients and waste drive algae growth. It also recommends balancing light, CO2 and nutrients so plants outcompete algae, and says algae-eating fish, shrimp or snails can help. The Tropica page adds weekly trimming. If you add fish later, the shop’s post on signs of sick freshwater aquarium fish can help you spot trouble early.
FAQ
How much substrate does a planted tank need?
The Tropica page says to cover the substrate with at least 3 to 4 cm of gravel.
How many watts per gallon should a planted tank have?
The Wikipedia overview gives about 2 to 4 watts per gallon (0.5 to 1 watt per litre) for a full-spectrum light. Check your tank volume and the light’s listing.
Do I need CO2?
Tropica calls CO2 the main nutrient for plants, while Wikipedia says to add it if your plant and fish load requires it. The choice depends on your plants.
Which fertilizer should I use?
Tropica recommends a micro-nutrient liquid for all planted tanks and a macro-nutrient liquid for tanks with many plants. Whatever you use, dose so plants use it all.
How do I keep algae down?
Regular water changes, balanced light, CO2 and nutrients, and algae-eating fish, shrimp or snails, per the Wikipedia overview.
Should I cycle before adding plants or fish?
The sources do not set an order. Cycle the tank before you rely on it, and ask a vet or aquatic shop before adding fish.
Bottom line
Work down the list in order: tank spot and filter, substrate at least 3 to 4 cm, a full-spectrum light on a timer, a CO2 and fertilizer plan, quarantined plants, a cycled tank, then steady water changes and trimming. If you are unsure, change one thing at a time.
