PO4 + LAB – marine aquarium phosphates
Phosphate supplement for marine aquariums, 200 ml, from the Aquaforest Lab line. It is intended for correcting…
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AF PO4+ LAB is a phosphate supplement for marine aquariums, aimed at hobbyists who need to raise PO4 in a controlled way. It suits tanks with few fish or very strong filtration, where phosphate can drop below the level reticulate reef systems need. Corals, particularly LPS, are sensitive to nutrient-depleted water.
Why it matters
- Controlled dosing: 1 ml added to 100 l of water raises PO4 by 0.01 mg/l (ppm), so the effect per dose is predictable.
- Coral health: Water stripped of nutrients can cause coral colour fading, bleaching and stunted growth, and LPS corals are the most affected.
- Safety limit: The maximum recommended daily dose is 1 ml per 100 l of water.
- Target range: The optimal PO4 level in a marine tank is 0.03–0.05 mg/l (ppm), and the PO4 to NO3 ratio should be 1:16.
Specifications
- Type: phosphate supplement for marine aquariums
- Brand line: Aquaforest Lab
- Package size: 200 ml
- Package weight: 0.24 kg
- Dosing: 1 ml per 100 l of water raises PO4 by 0.01 mg/l (ppm)
- Maximum recommended daily dose: 1 ml per 100 l of water
- Optimal PO4 level: 0.03–0.05 mg/l (ppm)
- Recommended PO4 to NO3 ratio: 1:16
What it works with
The product is designed for marine aquariums only. Use it only when PO4 measures too low, and test both NO3 and PO4 before starting, then dose gradually until the target level is reached. Strong filter media, nutrient-reducing agents and protein skimmers can lower phosphate suddenly, so monitoring is especially important in these setups.
Technical specification
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Frequently asked questions
It is intended mainly for marine aquariums with only a few fish or with very intensive filtration, where phosphate levels tend to drop. Use it only when the PO4 level is too low.
Adding 1 ml per 100 litres of water raises PO4 by about 0.01 mg/l (ppm). Dose gradually and test until you reach the level you want.
The recommended maximum is 1 ml per 100 litres of water per day. Do not exceed it.
The optimal PO4 value for a marine aquarium is 0.03–0.05 mg/l (ppm). Test your water first, because corals, especially LPS, are sensitive to low nutrient levels.
Yes, the manufacturer recommends testing both NO3 and PO4 before use. In a marine aquarium the PO4 to NO3 ratio should be 1:16.
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