Fish room ventilation

[JonH]

I just bought a new home, and am converting a utility room in the basement into a fish room. The room is roughly 16 x 30. I will have a pair of 120 gallon tanks share a 100 gallon sump, 2 40 gallon breeders and a couple quarantine tanks. I have electrician coming this week to install dedicated circuits for the room and am now planning my air circulation. I have a dehumidifier in the space draining into floor drain. My plan is to install a large ceiling bathroom type fan venting to outdoors. For fresh air, should I just put a couple vents to allow air conditioned air from finished spaces adjacent to fish room in, or should I install an active fan blowing the same air into the room? Trying to figure this out while the room is still studs.

 

[CBonito]

Yeah, you just want to exchange air in there so drawing in air from finished space and exhausting it outside is pretty much the only way. My only thought is whether you're going to want that on all the time, or if there is some way of detecting a humidity threshold in the room and only turning it on when that is reached. What I mean is maybe you don't want that sucking air out all the time if its unnecessary. But if you don't care, then sure that's fine.

 

[JonH]

Yeah, you just want to exchange air in there so drawing in air from finished space and exhausting it outside is pretty much the only way. My only thought is whether you're going to want that on all the time, or if there is some way of detecting a humidity threshold in the room and only turning it on when that is reached. What I mean is maybe you don't want that sucking air out all the time if its unnecessary. But if you don't care, then sure that's fine.

Thank you, yeah my current plan is to install two matching fans, blowing the same CFM. One blowing out of the room to outside, and one blowing in from adjacent room.