estimative index

  1. Art

    Question of the Day Are we past the Estimative Index way of dosing?

    When I started the hobby, we tried to dose to feed ONLY the plants but not algae. We all thought that phosphates were evil and having just a bit too much meant a war with algae. Then came Tom Barr with his Estimated Index idea and said, "forget that". Just dump plenty of complete fertilizer into...
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