Ryan: thanks for the compliment.
I spent today polyurethaning a bunch of trim work and new doors in my house so not a lot in the way of new pictures. EXCEPT, some the first tank equipment! kinda.
Let me present 2x 4" inline fantech 100s, high humidity, 18 watt power draw high efficiency fans:
One will exhaust air outside via a standard dryer duct and flapper. One will be the make up and take air in T'ed off from the 6" fresh air intake that my HRV pulls from. There will be a dryer flapper in the fishroom to prevent back pressure and warm air from escaping if the HRV is on and pulling air. Both will turn on and off at teh same time maintaining equal pressure in the sealed fishroom.
This is where I think alot of people screw up with venting their fishroom. If its completely sealed from the house (like mine will be) then you need a fresh air makeup otherwise venting with a single fan wont work as you can't depresurize the room. Well, it will work, but only for a minute then the fan just spins and doesn't really do anything.
I don't want to mix fishroom air with the rest of the house for humidity reasons (basement), corrosion issues (saltwater) and smell issues (curing live rock ect).
I plan on running the fans intermittently to raise the oxygen levels in the fishroom for the skimmer and exhaust excess CO2.
If It comes to it and I need to cool it, I plan on installing a split AC unit. I don't think I'll need it as the basement is pretty cool, but we'll see.
Here is a picture of my cousin at 10:30 PM in the pitch black (aside from my flash) coring a 4" hole for the ducting to outside. He's a HVAC guy and does great work.
Hopefully I'll have another update later tonight.