For a while now some of the corals have been losing colour. The worst affected being Acropora #3 (A. formosa?), the one that has been recovering from blistered skin. It's reached a point where some form of action needed to be taken. I had hoped that by introducing some more fish the nutrient levels would increase and the corals would look a bit happier, but even though I'm adding a lot more food to the tank the nitrate and phosphate levels still remain oddly undetectable. I performed as many tests as I could on Friday (with the exception of Iodine) and the results were as follows.
Specific gravity: 1.026
The levels are a touch lower than I'd really like them to be especially alkalinity and Strontium but the Tropic Marin Pro Reef salt mixes up to give an alkalinity level of 6.7dkH and 0-3ppm respectively so if I want those levels to increase I'm going to have to supplement them in my mixing bucket before doing a water change.
I intend to add Reef-Roids to feed the corals more frequently as the filtration system I have in place seems able to cope with the extra loading. Along side that I also decided to alter my lighting schedule. I looked at some of the other LX7 lighting profiles posted on the GHL website and their levels were set lower than mine. Had I been unintentionally frying my corals with too much light I wonder? So now I have reduced the levels and the difference is quite noticeable to my eye, the tank looks a lot darker and quite a lot more bluer! To be honest I really don't like the look but if the corals respond positively then that's what counts. I expect I'll get used to it eventually.
Hi, my name is Lisa and I live in Derby, UK. I am a self-confessed reefaholic!