I've got about a 30g sump made from acrylic for my 90g tank. I used to have a 55g glass sump for my 155g tank prior to this. I had no issues with my water temps rising during the day. But just yesterday I had a temp spike up to 90 degrees in my tank and I can't figure out why. Would the acrylic tank be more suseptable (sp way off...lol) to holding heat vs a glass tank? I can't figure this one out, but in the meantime, I've put a fan on the sump and it dropped it down to 80 but I also lowered the AC in the house. Here in FL, it's been 95+ for the past 2 months, not to mention the heat index getting over 100....but my house AC is set to never get over 84.....I would think that would be enough to keep the tank neutral at 80-81 degrees.
Any ideas?
Any ideas?