Phosphates

Sony Slayer

New member
Hi I bought my tank second hand. It was in a mess! Nitrates were over 160. I have got it down to about 3 now with alot of hard work and big water changes. But my phosphate level is still very high. Iv tested the ro water and there is none in there so what could be causing these high levels?any one got any ideas????
 

sirreal63

Go Spurs Go!!!
Premium Member
It is leaching back out of the rock. It may take a while for it to get down to acceptable levels. GFO and keep doing the water changes is the answer, but it may take months to correct.
 

aufo8mycat

New member
It is leaching back out of the rock. It may take a while for it to get down to acceptable levels. GFO and keep doing the water changes is the answer, but it may take months to correct.

+1
rocks would be full of it, and will take some time to reduce, I would replace half of it and keep up with gfo and water changes
 

Randy Holmes-Farley

Reef Chemist
Premium Member
[welcome]

Even a 100% water changes will not eliminate the phosphate problem for the reasons stated above.

How high is it?

Frequent changing of GFO is needed if it is really high.

These have mroe:

The “How To” Guide to Reef Aquarium Chemistry for Beginners,
Part 4: What Chemicals May Detrimentally Accumulate
http://reefkeeping.com/issues/2007-09/rhf/index.php

Phosphate and the Reef Aquarium
http://reefkeeping.com/issues/2006-09/rhf/index.php


Iron Oxide Hydroxide (GFO) Phosphate Binders
http://reefkeeping.com/issues/2004-11/rhf/index.htm
 
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