HELP!! What Did I Do?!??!

[Beverly]

Originally Posted by clownchick22

This worries me as I have some black patches on the bottom of a small piece of LR I bought from the LFS last week?
I thought it was kind of weird seeing black patches...hmm... not sure if this is bad or not.

If it is uncured LR it's probably dead stuff.

Anyway, I have an update on the tank. Read an article on the causes of cyano. Old lighting was a big factor in cyano growth. So we found the box of VHO tubes we'd ordered shortly after we set up the original tank about a year and a half ago. The box was full So the very old tubes were replaced today

We're also planning on doing another 40% water change on the weekend and hopefully get nutrient levels very low, even though 2-3 weeks ago that tank only had 5 ppm nitrate.

Will also be doing some serious water chemistry testing, which I think has been another factor in cyano growth. Have pH raising chemicals, liquid calcium and magnesium along with all their test kits to make sure chemistry is up to snuff. Have been neglecting the chemistry of my tanks for the past several weeks. This cyano problem has kicked me in the butt to get everything sorted out. Kalk is brewing as I type and will included in my daily tank maintenance regime again.

BTW, after adding calcium, magnesium and raised the pH in all three tanks today, corals have perked up considerably. Still have to make sure I added enough of everything, so testing begins tomorrow