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Help! red algea in my fuge

Qwank

Non-member
hey everyone.
i've had a 12g nanocube since january and i converted the middle rear chamber into a fuge with just cheato in it. i'm using a 6500k bulb to light it and it is on when my main lights are off. i've had huge success growing cheato in this fuge it usually more then doubles every 2 weeks, and i have to throw half of it away. about 4 weeks ago i threw too much away and what was left mostly got sucked into my pump and shredded up. so i took what was left, about a 2" ball of it, and put it under a sponge so it couldnt get sucked into the 3rd chamber and into the pump again.
well that worked and the cheato recovered but ever since then i've had what i believe is red slime algea growing on it. i think maybe it was because the flow across the cheato was restricted by the sponge. well the sponge is gone now but the algea keeps getting worse. i try to remove it from the cheato but its impossible to get it all and it comes back. it was so bad today that the walls of the second chamber were covered in it. so i threw out the cheato and cleaned the walls and figure i will leave the lights off for a week or so incase anything was left behind.
my main concern is when i turned my pump back on after cleaning and doing a water change the water was real cloudy and there were peices of the algea floating around. i got what i could with a net and most of the rest got stuck in the sponge in chamber 1, which i cleaned. i'm just worried that anything that didnt get removed from the display area will revive and grow all over my rock and corals. should i be worried or is that not possible? what else should i do to make sure its all gone from the tank?
thanks.
 
no light, no cyano....so your plan is sound. there must be a nutrient problem to support the cyano outbreak, perhaps because the nutrients that were being absorbed by your chaeto are now free in your tank to feed the cyano.

What are your water parameters? The most important ones here are nitrates and phosphates, which are 'fertilizer' for any algae.
 
ammonia, nitrates and nitrites tested 0 during the whole time i had the problem. ph 7.8. i dont think my test kit is too acurate, i think the nitates are probbaly around 5ppm. i dont have a phosphate test.

would a skimmer helpp with the nutient problem? i've been planning on buying one for sometime now, and this would give me an excuse to get one NOW.
 
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