The only difference between alkalinity and carbonate hardness is a conversion factor

Dimensions 11 1/2" diameter

Crafted from our legendary cast iron

fresh mimosa petals

all our stoneware is strong and durable

Salifert Test Kit Phosphate EARRINGS The only difference between alkalinityPhosphate has several negative effects if present in a too high concentration. First of all undesirable algae growth might result. Making an aquarium an unpleasant sight. Phosphate also blocks or retards the growth of corals and calcareous algae. One of the scientific studies shows that a phosphate concentration higher than 0. 05 mg L decreases the growth of calcareous algae by 90%! Washing fish food, which is a rich source for phosphates in a sieve