Calling Zeovit and/or Carbon Dosing Reefers

[jumplittlechloe]

My problem = Green Slime Algae on the Rocks and Sand.

I am running a reactor with GFO changed monthly. I have started (second week) dosing zeobac and coral snow (1 drop and 2ml or snow daily for 2 weeks). While the thickness of the green slime seems to be decreasing the slime continues to stay on the rocks. I have dosed a carbon source in the past and noticed that the growth was reduced, however I did notice some clumping in my reactor with the GFO. I am considering starting back with carbon dosing (have some red sea no3po4x left) at .5ml to try and kill off this nuisance slime. Any thoughts or ideas on dosing this?

You can see some of the slime in this video on sand and rock on the right side:
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[thanh386]

Put a comforter over ur tank and turn off lights for few days. And watch ur slimmer go. I had that problem in a much larger scale and it worked.

 

[jumplittlechloe]

Did it come back?

 

[thanh386]

It comes back from time to time if I don't keep up maintence. But the initial darkness killed them to a point where it was manageable when it return, only 1 patch vs entire tank. I think once you kill them and keep a a maintence routine they shouldn't come back

 

[jumplittlechloe]

Sometimes I wonder if I should change my gfo more frequently (currently change once a month).

 

[thanh386]

I change my gfo once every 8 weeks. For me, gfo works better to keep phosphate low rather than bring it down.

 

[jumplittlechloe]

Phosphate is very low .00-.01 (tested on Hanna photometer). I just feel like this slime algae/bacteria is uptaking nutrients before they can be removed by the gfo.

 

[thanh386]

Are u using tap water or feeding heavily? The low phosphate could mean that the algae is consuming it .

 

[jumplittlechloe]

Using ro/di with a dual di stage and water is changed weekly 20%. I feed 2x daily and use zeovit products for coral nutrition.
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[liverock27]

I dose NO3PO4-X and have seen some success with decrease in nitrate and phosphate. What size tank do you have and what is your NO3 and PO4 currently reading in your tank? I ask because .5ml is a small amount.

 

[jumplittlechloe]

No3 - 0
Po4 - 0.00-0.01

Tank is 34g with around 28-30 gallons of water.

 

[liverock27]

What are you testing with? Those are outstanding numbers. the algae is probably consuming some of the nitrates giving you the low readings, but I am not familiar with this type of algae.

 

[thanh386]

I give up I can't beat those numbers

 

[jumplittlechloe]

Here is a better pic of the green slime. I tested po4 on digital Hanna photometer and no4 on red sea test kit.
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[jumplittlechloe]

Feel like flow is good also 2mp 10s in nutrient transport mode.

 

[liverock27]

I am stumped as well. I have seen this in other tanks, but most of the time it comes from
them using tap water and their readings are never as good as yours.
Wish I could be more help, but your tank looks great.

 

[jumplittlechloe]

Thanks, can't complain too much. I will take this over hair algae any day

 

[snowmansnow]

how long has it been since you swapped lamps? Did you notice a change in algae growth within a few weeks of any changes?

B

 

[jumplittlechloe]

Using AI Sol Blue LED lighting and the problem has been a recent issue (as in the last 2 months).