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PO4 ?

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Matt_toynton

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Reply #15

Cheers Gav, sand is crushed coral not sure on its age - is it worth gradually changing it out ? Or just switching to an aluminium based media such as Phosguard and then switching back to just chemipure once levels are acceptable ? I’m just a bit confused why no matter what media I use my test kits are not showing a drop in PO4 - as Andy stated though I was probably topping up what export I had by using reefroids ? I did have a fair bit of hair algae a month or so back but this is now under control - just a little in places and also had a bit of purple slime cyano which leads me to believe my issues are almost certainly a result of excess Po4, seems the algae starts to go away if I allow my No3 to raise to balance out with the PO4 but in turn I can’t keep any SPS as they just strip . I’ll load up the reactor at the weekend with Phosguard and let it do it’s thing, can I continue to use the chemipure at the same time do you think ? as It keeps the water really clear

Gav

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Reply #16

Maybe you could test by testing a sample of water , probably just before feeding (as this would probably be at its lowest level) to get a starting level , remove a scoop of sand into a tub with a couple of inch of tank water and test a few hours later to see if there is any increase , then test again the next day .
Phosbond is a mix of both aluminium oxide and GFO as another option if you like to run both . I can't see the chemipure being a problem , I run purigen with mine which I think are similar products although the chemipure appears to remove more than just organics .

Asco1104

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Reply #17

How old was the system when you bought it?

The real reef rock won’t be a problem, I’m leaning towards the rock and sand being your po4 issue.


Tim

Matt_toynton

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Reply #18

Hi Tim - It was well established, probably over a year and a half, however he admitidly sais he let it slip due to other commitments and did have a fair bit of algae when i bought it, so it stands to reason that both rock and sand may have a fair bit bound up. Ive owned it since October. Unfortunatly ALL our LFS had sold out of PhosGuard ! so ive ordered some online and am expecting it to be delivered anytime. I would love to get my hands on a 2nd hand Hanna Checker for the Po4 tests as im now even doubting the Red Sea Pro test kit.

Matt_toynton

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Reply #19

Ok - quick update .. been running Phosguard now for 4 days in a reactor, just tested in anticipation and it’s dropped by .... wait for it ... nothing, still measuring 0.12 - what is going on ?

I am correct in thinking the new Red Sea test kits for PO4 is just 17ml of tank water ? As I turned the result card over and it states high and low test ranges 1ml tank water + 16ml RO but does not state if this is for high or low test (or indeed both ?) I tried it and it reads 0.01

Matt_toynton

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Reply #20

Few pics of what I mean ( it’s the new type of kit as below)
Pic 2: instruction stating add 17ml of water to be tested (I’ve presumed all 17ml will be tank water)
Pic 3 : shows high and low ranges, and shows at the bottom 1ml tank water+16ml RO , but does not state only for high range etc.

Paddone

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Reply #21

I have the older test that also asks for 17ml and that is defiantly all tank water.

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