The most common reasons for the problems you describe are that (a) the algae is still alive OR (b) your filter needs more (not new) sand, because your pump's too big and you lose some each backwash . . . or BOTH (a) & (b).
The most common reasons for the problems you describe are that (a) the algae is still alive OR (b) your filter needs more (not new) sand, because your pump's too big and you lose some each backwash . . . or BOTH (a) & (b).
Last edited by PoolDoc; 08-08-2012 at 07:00 PM.
PoolDoc / Ben
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