Dosing Brightwell Phosphate E

Thanks for the info... not running any GFO right now and I've waited over 24hrs and after dosing the required ML to go from 0.27 to 0.05 I'm testing at 0.25... I decided to test some RO and got 0.00 no surprise there I tested my coral only tank and got 0.04 so I know thats not confirming my hanna is correct but at least I can tell its not completely off. Maybe I just got a bad bottle of this stuff ??? its not expired...
 
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Thanks for the info... not running any GFO right now and I've waited over 24hrs and after dosing the required ML to go from 0.27 to 0.05 I'm testing at 0.25... I decided to test some RO and got 0.00 no surprise there I tested my coral only tank and got 0.04 so I know thats not confirming my hanna is correct but at least I can tell its not completely off. Maybe I just got a bad bottle of this stuff ??? its not expired...

Were you able to figure out why it was not dropping?
 
Just dosed a third of the recommended amount of Phosphate-E, an hour later my chalice started sliming & swelling.... no other corals were showing signs of stress. Is this normal?
 

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Yes. Run a skimmer, also
I dilute 10 or 20 ml into 500 ml rodi and drip over 8 hours into overflow filtered with a 5 micron sock. Every couple of months. Do not use if po4 is below 0.2 ppm, you want all the lanthanum bound to po4, not your livestock. After the drip, run the sox another 12 hours.
I use this as required, if the po4 gets above 0.4. Also remove gfo before use, and replace with new after.
Do not lower po4 more than 0.5 ppm per 2-3 days
How much you add depends on po4 level. In my 75g, 20 ml will lower 0.5 to 0.1 ppm. It would scale linearly, so for 200g 50-60 ml for the same result.. I ran a test 1st with 10 ml to 'calibrate'.
I use a dosing pump to drip, but IV bags work too.
My po4 was .3 Monday. I dosed Monday and tested today. It’s still at .3. How soon until I dose again?

I’ve been running skimmer and sock as well.
 

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