Two Questions. Too Hot And Too Much Algae

[Sasha123]

Okay so my cool water aquarium is running around 78 degrees. It has 9 Danios and 6 peppered cories.Is that too warm? I have no heater on. I think its the lights heating the water. I have the Nicrew Led strip and now have lots of algae too..Also I need an algae eater that can handle cool water, its supposed to be around 70 degrees for the cories. Thanks.

 

[Rtessy]

That's about where I'm at with my coldwater tank, no cories, but no signs of stress from the inhabitants. If anything, try adding more aeration, as warmer water doesn't hold as much dissolved oxygen. As for coldwater algae eaters, you'll hate me, but ramshorn snails and amanos shrimp are what I use. If the temp doesn't drop below 72 ish, a bristlenose pleco can work if the tank is at least 20 gallons.

 

[BottomDweller]

Yeah that's a bit too hot. The danios and cories like it around 67-72f.
As for algae eaters nerite snails, amano shrimp, a bristlenose pleco or a rubberlip pleco would all be good around 67-72f.