So... what's the temperature now? Before chiller with house door open 84 now with chiller 77.3 just adjusted to 78:thumbsup:
What lights you have over the tank? ebay chinese leds box light . I had no problems before I had the lights over a year. They could stay ok for a while and then start giving problems. Those fixtures are inexpensive but they have power. That kind of stuff happens all the time when running LEDs. That's why I don't recommend LEDs. The chinese LEDs from Ebay aren't that bad. it's just because they are actually LED lights. can happen with any brand. Try to dim both blue and white lights for a while...
Water chemistry params? What should I test for?
Nitrates, phosphates, alkalinity, magnesium, calcium, pH, salinity,...
That could be bacterial infection, wrong light, shock, predators... How do they get shock? Theres no body picking on them.How do they get a bacterial infection could it be the wrong food.Shock is mainly lights or sudden changes in water quality, for example the use of GFO or GAC. I don't recommend GFO. Wrong food, related to bacterial infection, could be caused by live food or excessive frozen food, with high organic nutrients and/or phosphates.
Please test your water...
The problem could be simply high alkalinity or something like that.
People will need more info to come here and help you.
Grandis.