I think discus don't even need that high temps (maybe 80, you don't need 85; but that's just from what I've seen people do on this forum).
In any case, it of course depends on what you're stocking. I have crystal red shrimp and espei rasboros and 75-76 is good for me. I've seen many others with CRS also set their temps around the same and not as cool as 70 like you mentioned.
In any case, it of course depends on what you're stocking. I have crystal red shrimp and espei rasboros and 75-76 is good for me. I've seen many others with CRS also set their temps around the same and not as cool as 70 like you mentioned.