hmm, tempting. only issue is I am maintaining 27degC - 28.5degC in the system. Falls to 27degC at night (the setpoint for the heat to come on) and increases to 28.5degC during the day. It's quite warm in my home (27degC or 80.5degF) due to the heat outside. My fishnook water runs warmer than that on it's own with the pumps and led lighting. My heat doesn't even come on now. My RO Water storage is in the bodega off of my carport...and I see that when I do 40% water changes, I don't even drop the temperature more than .5degC.
So, I'm not sure if 80.5 to 83.0 degF will be suitable for the rams. I hate to raise it anymore on account of my corydoras (6 different species of corydoras).
Once it starts getting routinely 100degF outside, we will have our AC to maintain 80degF inside the home, so the situation shouldn't get much worse in the summer. My water changes will happen early in the morning, so by then even the RO Water in the bodega will probably have cooled to 80degF as well. We try to keep the AC off until June 1st, and then run it through October.
Please, send me a PM with a price to ship 2 to 4 of them to 85622 (or I can get them directly at Tucson International Airport... however you do it). I might consider it.