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Old 02-16-2008, 01:47 PM   #1
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Diatoms

ugg i can't seem to get this under control. I cut back feeding to once a day and there is usually not much left over. And what is left over i think my clean up crew makes short work of. I've done multiple water changes in just a week or two so my water parameters should be bad and i tried to siphon out as much of that algae as i could when i did the changes. But it is back in a day or two. I have those test strips but they are rather inaccurate so i think i'm gonna take a water sample in to get tested. I get my water from the LFS and they use ro/di water to mix it with so i don't think it should be from the water. Here are the stats on the tank

12 gal w/
2x clowns
cleaner shrimp
two small corals
about 17lbs total LR

Lights are on for 8 hours a day.

The rocks and glass are kept clean by my turbo snails and blue leg hermits. The algae is all over my sand bed though. I have 4 nassarius sand snail but they don't seem to be eating it. I'm stumped. Here's pictures. I don't know what else to do. Let me know what you think
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Old 02-16-2008, 06:15 PM   #2
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That looks like the start of cyano to me.

Cyanobacteria, AKA Red Slime Algae
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Old 02-16-2008, 06:29 PM   #3
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I don't understand where its fueling source is comming from though. I'll siphon it all out and it just comes back in a matter of days. I've been doing probably 15% PWC and reduced feeding.
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Old 02-16-2008, 06:46 PM   #4
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That is cyano. Having a nano tank, you should really invest in quality test kits and not the strips.
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Old 02-16-2008, 07:55 PM   #5
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What Mike and Hara said. You need to read the article that Mike linked and get the source under control. You need to get some more flow where it is growing. You can siphon out the areas you see to help get it in line for now. Cut back your feedings to 2x-3x/week. Cut the light period, etc. etc.
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Old 02-16-2008, 11:43 PM   #6
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Agree that's cyano, and your clean up crew won't do anything about it. When you get the quality test kits, (hopefully sooner than later) be sure to test your LFS's RO/DI water. You may be surprised. Hopefully you won't be, but I wouldn't assume that it's pure water you're starting with.
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Old 02-17-2008, 12:23 AM   #7
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Thanks all. i did another PWC today and siphoned out as much of it as i could. I'll cut back on feeding again and maybe turn down the light a bit. Any suggestions for test kits?
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Old 02-17-2008, 11:18 AM   #8
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I prefer Salifert and LaMotte for NO2, NO3, Ca, Alk, Mg. I use a Pinpoint probe for pH. Almost any test kit for Ammonia.

I need the sharp color contrast these kits provide vs. the subtle shade differeneces of some of the other kits.
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Old 02-17-2008, 11:46 PM   #9
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Except for nitrate, I find API (Aquarium Pharmaceuticals) kits to be a great value. They're pretty accurate, cheap, and pretty easy to find in local shops. Their nitrate kit though isn't sensitive enough for me though (can't really measure < 10ppm). The Salifert nitrate kit will get you readings down under 0.5ppm.
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Old 02-18-2008, 02:54 AM   #10
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I added another pump today to fix my flow issues so hopefully between that and the reduced feedings it will fix the problem. I will keep an eye out for a better test kit. Thanks for the help
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