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and nitrate
as it reflects the levels of calcium and magnesium
The D-D H2 Ocean Sea Salt offers a superior solution for aquarists seeking reliable
If you've algae loving marine fish
G4 Pond Paint/Sealant 2.5kg - Black 20-50 and nitrateG4 Pond Sealer is a moisture cured polyurethane which forms a non porous seal on concrete rendered ponds, G4 pond sealer uses the moisture in the air the render to harden, it can be applied to slightly damp surfaces, but it is important that the render is sufficiently dry to be porous so as to enable the first coat of G4 pond sealer to bond obtain a mechanical grip,G4 pond sealer can be applied in poor weather conditions, high humidity and at