Effect of PO4 on GSA
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Old 10-15-2012, 05:34 AM   #1
T1T4N1UM
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Effect of PO4 on GSA


Hello TPT,

As far as I'm seeing in my tank, dosing of PO4 only inhibits GSA growth, and doesn't rid it. I'm currently dosing EI in a 36 bowfront (18" tall), 2x T5HO as lighting with good reflectors for 10hrs, CO2 in the green-yellow.

I've been getting plenty of GSA on my crypts and it just seems to not go away even with increase of PO4 and decrease of NO3. Am I not hitting a critical PO4 level to kill the algae, or will I need to just remove the leaves and maintain PO4 levels?

Any experiences with this would help.

Thanks
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Old 10-15-2012, 05:39 AM   #2
Bluek24a4
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You have to manually remove it. Proper dosing prevents algae from growing, it wont kill off already existing algae.
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Old 10-15-2012, 05:58 AM   #3
chou
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BlueK24a4 is correcto same thing happened with my 5.5g
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Old 10-15-2012, 02:30 PM   #4
Kathyy
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GSA disappears in my tank when P is right. It is still present in the overflow's U tube though. The U tubes get a lot more light and not a whole lot of grazing by any snails passing through. GSA in the tank gets pecked at by platies and scoured by otos and snails. I have seen ramshorn snails remove GSA over a period of a couple days but that was tough unsoftened by phosphate GSA and the leaf was ruined. I suspect the extra phosphate makes the GSA easier to eat as leaves aren't damaged by grazing now.

That said I do dose a lot more phosphate than the EI chart. I use 2-3 times the amount shown in the chart.
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