The planted tank is using some the nitrates/phosphates present in your
tank-water. I wouldn't read too much into that. Try testing your tap-water
for nitrates and phosphates, if it is clear, the problem is possibly due to
over feeding and possibly over-lighting. If either are present, you may have
to consider using RO/DI water and 'artificially' rebuilding it like some of
us need to. It's a pain. I apologize if I've missed some of the early posts
but how old are your tanks?

Mark

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