cyano with low nitrates.

[pete620]

I have a 65g and am starting to see cyano on the sandbed. I know flow helps discourage it, but if I point a power head at the cyano my sand goes everywhere. Any other suggestions for getting rid of it?

Parameters: (all tests except nitrate on API test kits)
Phosphate undetectable on API test kit.
Nitrate between 5 and 10 on salifert.
PH 7.4
KH 7-7.5
Calcium 500 (working on dialing in DIY automated kaulk doser, hence the high calcium, set it up yesterday)

I'm in the second week of cycling a DIY sulfur denitrater (tank was 50ppm nitrate prior to this) and I set up a RDSB this week to keep the NO3 down when the sulfur reactor is done doing its job.

No fish in the display, there is one damsel in the sump.

I have about 20x turn over in the display, and the tank is skimmed with a Euro Reef RS-80

Thanks for the help

 

[stingythingy45]

Your PH and KH is quite low.
I'm thinking you need to correct that with some buffer and more airation.C02 build up,feeding practices can fuel cyano.

 

[pete620]

I was hoping the kaulk would help the PH and KH, so I was going to wait a few days before I tried a buffer. I feed very little (only one small fish) but the previous owners of the tank overfed. I traded in the other fish (hippo tank, ****** trigger, snowflake eel).

 

[PogoMonogo]

Its spelled "Niger" trigger.

 

[sanababit]

pete turn of lights for 3 days, no sunlight, nothing, on 4th day only actinics and on 5th day regular schedule, btw how old are your bulbs, good luck

sana

 

[cpl40475]

one other thing to do.
Don't poit the PH directly o your sand after our syponh out the cyano that you can lower the PH closer to the sand bed trying to get a direct flow above the sand bed.
I,m sure you are using RO water.
Tracy.
PS what type PH is it?

 

[xenon]

Does the cyano only collect in your dead spots?

 

[SaltyDr]

Look in to getting a phosban reactor.

 

[pete620]

The cyano is forming on the middle front of the sand bed (no dead spot). I have a korala 2 and a Tunze nano stream 6025 on the tank, so I'll try lowering the Koralia closer to the sand. I have a phos reactor, but I still need to get a phos remover for it.

 

[pete620]

<a href=showthread.php?s=&postid=11883852#post11883852 target=_blank>Originally posted</a> by PogoMonogo
Its spelled "Niger" trigger.

Thanks for the correction.


My PH and KH are both up to 8 now, and I moved my power heads down so they are both blowing across the sand. I plan to add another koralia 2 or 3 to the tank to bump it up to 30x turn over, or two maxi jet 1200's on a wave maker.

Thanks for all the advice.