Sps color and radion

[xenon]

You should make sure your salt is not deficient in potassium. We are currently using the new Fritz salt and it is highly deficient in potassium (290ppm) so we buffer it up to 400ppm and it makes a big difference in coloration.

I would start by adding more fish and feeding more. Either that or start broadcast feeding some oyster eggs and rotifers.

[MitchM]

Originally Posted by xenon

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I would start by adding more fish and feeding more. Either that or start broadcast feeding some oyster eggs and rotifers.

I agree. Undetectable PO4 is not necessarily a good thing. Your corals could probably benefit from some nutrients.