THANKS FOR ALL THE INPUT YEA i need to lower the height :P
this is on the floor...if i am going to make it the pool liner is the way to go(i didnt even know they made such a thing LOL i only knew about tarp).. hooking up an exhaust fan is a good idea, that should take care of the mold/mildew and the condensation... i have a bath tube in my back yard the top is frozen (it doesnt freeze all the way) right now with some feeders... if i was going koi i would do it outside... I am building this but it is not permanent, since am using wood, could just take it apart, but wood tends to decay. using bricks is better just i would still use wood to hold them up (if you know wat i mean)... this whole project is cost dependent, from wat i researched with the help of comment the most expensive thing is POOL LINER... I have to do much more research, since i rather waste my time reading than, building and figuring out the flaws after... I GOT THIS Idea into my head after cheken sent me this link to this petshop in the queens, ny area (
http://www.fishtown-usa.com/ ). I have not been there yet but i will go there this week sometime i hope. HERE IS THE PICTURE IN THE 4th QUADRANT!!
http://www.fishtown-usa.com/about.htm it looks like it's made out of 4x4 posts and tarp :P
What brand/type of liner do i need? i read the other post it's kinda vague... THe liner is the most expensive part of this...