




NT Labs, GH & Minerals UP, available from Swell UK.
Maintaining a hardness of at least 8°dH helps to keep the biological processes working properly, thus avoiding stagnation and acidification.
The calcium and magnesium, which form the hardness of the water, are essential for the proper growth of plants and aquatic micro-organisms which consume unicellular algae and help to keep the water crystal clear.
1L Treats 6800lts / 1500 gallons.
| Item | RRP | Our Price | Quantity | Add Item |
| Size | |
|---|---|
| GH & Minerals UP 1kg | 1kg (treats 6800ltr, 1500gals) |
| GH & Minerals UP 3kg | 3kg (treats 20400ltr, 4500gals) |
| GH & Minerals UP 20kg | 1kg (treats 6800ltr, 1500gals) |