P04 making corals unhappy

[FragIt Dan]

What level do you consider 'through the roof'? Is it possible you are contaminating your test at some point? It seems odd that you get such different readings. If you are running GFO already, at close to manufacturer recommended qty and flow rate, I would suggest changing the GFO rather than adding more. If you are concerned about your DI, just run a test on your RODI water, it is easy to rule out. I would expect below ~0.20ppm PO4 coming out of RODI. If it is significantly above this, you will either need to slow the flow through the DI, or change it, but it is hard to know which without knowing how fast your flow is and without the actual results from your testing.
Dan

[NIVLEM09]

Using the Hanna high range p04 checker,it read 12 ppm.unfortunately,i only have an API D/I unit not an RO/DI and the source of p04 is THE D/I unit.so,i ordered an RO/DI unit and GFO high capacity from BRS just now.i've had to put my sps corals in my brother' tank til the problem is resolved...i don't wanna lose my corals and especially my beloved Ice fire echinata!thanks guys.

[sully08]

Can anyone recommend a good GFO ?

[Proteus]

Originally Posted by sully08

Can anyone recommend a good GFO ?

rowaphos

[monocus]

you might want to check your nitrates at the same time.you can build an inexpensive nitrate reactor if you get high readings

[ScubaSteve]

Originally Posted by NIVLEM09

Using the Hanna high range p04 checker,it read 12 ppm.unfortunately,i only have an API D/I unit not an RO/DI and the source of p04 is THE D/I unit.so,i ordered an RO/DI unit and GFO high capacity from BRS just now.i've had to put my sps corals in my brother' tank til the problem is resolved...i don't wanna lose my corals and especially my beloved Ice fire echinata!thanks guys.

Save-on in North Van has a RO/DI station where you can fill up jugs. Maybe head there and get some water for a few water changes while waiting for your BRS RO/DI.

[NIVLEM09]

Thanks for the suggestion...i was actually thinking about doing that

Originally Posted by ScubaSteve

Save-on in North Van has a RO/DI station where you can fill up jugs. Maybe head there and get some water for a few water changes while waiting for your BRS RO/DI.

[Ryan-b]

Are you using the ppb p04 Hanna reader if so you need to multiply the number by 3.066/1000. Which would be .037 which is pretty decent.

[kien]

BRS brand GFO is great stuff. Better than rowaphos in my opinion. It rinses a heck of a lot quicker than rowaphos that's for sure.

[Proteus]

Originally Posted by kien

BRS brand GFO is great stuff. Better than rowaphos in my opinion. It rinses a heck of a lot quicker than rowaphos that's for sure.

Not supposed to rinse rowa