Phosphate, Silacates or Flow?
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Lol yesterday I wasnt on my "a" game.
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New tank just settling in and reaching an equilibrium. Why do you think it is in the sand bed and not behind the rock where there is even less flow?
Mine was actually in a pretty high-flow area -- much higher than the back of the tank. The back of the tank didn't get much light, though, so my guess is that was the difference. (And I know that question was directed at Rich, but thought I'd chime in 
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Yea that is my point. Usually the added flow that everyone suggest and that helps is because it prevents the anaerobic bacteria from culturing thereby reducing the production of hydrogen sulfide in turn cyano bacteria. We promote the growth of bacteria in our systems so the presence of the cyano if you think about it should not surprise us. Even if you use dry sand and rock with no bio load you will have die off. While high nutrient levels can cause the outbreak it is not the only reason. If you don't believe that the dry sand will not produce the anaerobic and hydrogen sulfide put some in a gallon jug fill it with saltwater, cap it , let it sit several days, pop the top and take a big extended sniff and let me know how you liked it.
Valid point. But, I placed all the rock prior to placing the sand. In areas I can't see (behind rocks that are against the tank wall) it is basically bare bottom. Therefore, I get a pretty good view of all the sand area. Not saying that there isn't some still alive that just hasn't progressed to a point where it can been seen. To the contrary. That is why I want all the advice I can get from you guys so this doesn't go viral on me. :shout:
Edit:
ShanePike;769310 wrote: Mine was actually in a pretty high-flow area -- much higher than the back of the tank. The back of the tank didn't get much light, though, so my guess is that was the difference. (And I know that question was directed at Rich, but thought I'd chime in
That is almost exactly the my case as well. I adjusted the PH just a tad. Came home a few hours later and I have dunes next that area but can see the tank bottom where it was. LOL Guess maybe that was a bit too much flow. In my mind, I have ruled out flow as the cause. I tend to lean more to light cycle and over feeding or just new tank syndrome. The po4 could be affecting it as well but since no one screamed "Oh My God!" when I posted that it is at 0.25 I guess that isn't terribly bad. LOL
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my 210 is my experimentally abused tank... po4 is .75ppm and i still get great color and growth on acros.... no cyano. no3 is 5ppm in that tank and i have no clue about the other parameters.
Edit: i attribute t5s to the success of my 210
Edit: i attribute t5s to the success of my 210
Oh, yeah. I was definitely overfeeding mine at the time. Thanks for the reminder
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If its diatoms raise your ph. 8 seems low I like it 8.3 ish during the day
A little update. First, since the second vacuuming I have not seen any cynao what so ever. I did use the gift certificate I won at the last meeting to purchase a dual In-Line TDS meter and got it installed this morning. Incoming water is 49 ppm and outgoing is 1ppm. Appears that my RO/DI is still in good shape.
