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It still amazes me that people buy from this guy without doing a quick google search. I guess the cheap prices are irresistible, but in the end you get what you pay for.
From another forum today, coincidentally enough.
http://www.reef2reef.com/forums/showthread.php?t=167002
If somebody has a PO4 checker can they bring it please? My low range is reading zero and I just don't think it's that low and would like to double check it. Thanks.
On the left side of your picture seems to be more of the substance. Looks like cyano. Try blowing it with a turkey baster and see if it blows off. If it does siphon it out.
They make digital timers with dual 3 prong. It's your most simple, cheap solution, if you don't want to invest in a controller. Those are your 2 choices, plain and simple.
Here is my dual digital timer, 3 prongs.
Very promising product, I'm looking forward to seeing this in person for sure! I think it would make a great video to have it on the back of my peninsula tank!!! :)