Just figured out why my SPS were not growing

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ficklefins

ficklefins

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what is your magnesium?

what is you phosphates also?

No Idea buddy.

But I did check my calc/alk levels today and I am at:

Calc 390-400 (Seachem test, I need to get another test)
Alk 2.8 (salifert)

I'm not adding any chems today but will do so on Sunday according to another round of tests.
 

chadfarmer

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if your magnesium is off then that is the reason why your alk and calcium are low

if adding 2 part than suggest trying to get the magnesium tested from a local reefer or store (better safe than sorry)

phosphates will stop growth of sps also
 

gflat65

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I have problems keeping my sps tank stable... Using the two part, I have been using 275ml of calcium (2.5 cups/gal) and 300ml of alk (2.25 cups/gal) and think I'm almost right. If I miss a day, they both drop quickly... Need a peristaltic... I ordered a magnesium kit, but they were backordered, so I need to find another source. It's never been tested or adjusted, so I bet it is low, which could be the key to the balance.
 

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