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spooda420
07/19/2007, 07:45 PM
Is it possible to remove to much PO4 at one time? or will it upset the balance tank?

I am still battling my HA issue and I bought 2 po4 reactors and I plan on filling them all the way up with rowaphos and setting them both up in seperate parts of the sump...
Shooter7
07/20/2007, 06:39 AM
Have you tried asking this in the chemistry forum? I've read a bunch of stuff on here regarding PO4 before, but can't say I've seen this particular question asked. I would think that it wouldn't really be detrimental to anything but algae, but then you go back to the old adage of nothing good happening quickly in a reef tank, and always thought that that applied to changes in chemistry as well. Still, I'd be interested in hearing what the chemistry gurus had to say about it...
DrBDC
07/20/2007, 08:48 AM
Just like any changes in the tank, take it slow. I would start with 1/3-1/2 the recommended amount for the tank volume. You can measure the effluent to see when it's depleated. At that time, go to about 2/3. That will let you ramp up over a couple/few month period. Also, make sure that the gfo is shaking vs. rolling around. If the flow is too high it can grind itself up and release into the tank. That is especially important if you are using an aluminum based phosphate remover IMO.
DrBDC
07/20/2007, 08:50 AM
You can also mix it with carbon and it will let you get a little higher flow (thus eliminating hardening of the media).
DARKSILENTTYPE
07/20/2007, 09:32 AM
yes it will cause RTN if you lower it to fast .

John
spooda420
07/20/2007, 02:28 PM
why RTN? I'll post in the Chem forum and post the link here later...
dphins
07/20/2007, 07:53 PM
<a href=showthread.php?s=&postid=10378346#post10378346 target=_blank>Originally posted</a> by DARKSILENTTYPE
yes it will cause RTN if you lower it to fast .

John
A lot of people had this problem by adding to much to fast.
JxMetal
07/20/2007, 08:13 PM
yes, a rapid change will send a shock to the system basically. If the corals and everything are used to having some PO4 in the tank and then suddenly it's gone they'll have problems.
DARKSILENTTYPE
07/21/2007, 10:59 AM
Do you know what your PO4 is at ? I have a hanna meter we could meet at MS sometime sunday and check it .


John
spooda420
07/21/2007, 11:49 AM
last time I tested it it was .3 or .03, I forget, which ever one is most logical....