rohit1592014 keep a heads up in the DIY section, I'll try and get the pictures uploaded for discussion there, I don't want to get OT on this thread. the long and short of it is that I made a 4x4 frame (4x4's are really 3.5 inches wide) and used 3.5 inch thick poly iso insulation for the bulk of it, adding closed cell foam (the rigid stuff at home depot) where I thought that standing water might ever reach it's way in or where hot humid air would exit (basically the first and second "floor" and the lid). I then used "great stuff" spray foam to seal the edges into place, as well as adhere shower liner over the insulation and wood to prevent wicking of moisture (it's very important to guard against moisture getting into poli iso insulation, I used it because I had some laying around and it give R20.5 in 3.5 inch space and fits perfectly in the space provided by 4x4's, but rigid foam is much more moisture tolerant and therefore a safer bet, though a little bit lower in R rating). if you have a planted tank and are using LED
grow lights, enclosing the hood provides a lot of heat. you do need to be aware of the temperature and humidity perameters of the light fixture. CF
and incandescents are likely too hot, without a fan and venting. I'm still playing around with how to circulate air and balance heat and humidity. I have not found any fans designed for high humidity and highish heat. I have settled for the short term on using a fish tank air pump, figuring most shops are super high humidity and quite warm. I have not placed the air pump inside the enclosure yet, because I still smell off gassing of the sealants and felt a need to pump in fresh air to avoid toxing the critters. this is definitely a DIY kind of thing and requires awareness of heat encapsulation risks and takes a fair amount of dinkering to get dialed in. ideally, it would probably be best to do this at the beginning during a fishless cycling where undershooting or overshooting temps won't cost you the life in your tank. I work from home so I can monitor closely as I make changes. Insulating the underside and back and sides would likely save you a lot of electricity without running into over heating, with LED
's at least. actually sealing and covering over the top is where there is a big change and apparently a greater need for close monitoring. anyhow, i'll try and put the details in the DIY section and am happy to answer questions and receive recommendations as I go. cheers!
Originally Posted by rohit1592014
AV, how did you insulate?. I have a 125G Discus tank & need heaters to maintain a 30 deg C
Sent from my iPhone using Aquarium Advice