I've been having a phosphate problem in my DT.
I've been trying everything I can think of to lower it. I'm running GFO but it wasn't making a dent. Water changes weren't making a dent...seemed to even be getting worse after water change. So tonight I tested my RODI system.
RODI:
Hanna Checker:
Test 1 - Greater than 2.5
Test 2 - 1.5
API manual test: 0.25
DT:
Hanna: .13
API: 0
Yesterday after 20% water change Hanna was .75 (So my GFO appears to be working...)
So obvious questions:
1. How is it possible my RODI has PO4 in it?!
2. How can I prevent it?
I've been trying everything I can think of to lower it. I'm running GFO but it wasn't making a dent. Water changes weren't making a dent...seemed to even be getting worse after water change. So tonight I tested my RODI system.
RODI:
Hanna Checker:
Test 1 - Greater than 2.5
Test 2 - 1.5
API manual test: 0.25
DT:
Hanna: .13
API: 0
Yesterday after 20% water change Hanna was .75 (So my GFO appears to be working...)
So obvious questions:
1. How is it possible my RODI has PO4 in it?!
2. How can I prevent it?