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- Mar 5, 2018
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- Fairfield County, CT
Comforting to know that 2 out of 2 replies aren't overly concerned about the 2.6 degree temp swing. Even better though, since changing the default differential the thing seems to be keeping a tighter range of 1.5 to 1.6 in the "D2" setting. Seven day chart below.I would not give a 2.6 degree temp swing a second thought if it is over a few hours. I don't think those fans are anywhere enough to vent the canopy. The screens in front really reduce the air flow as well.. Definatly not enough for the chiller cabinet. I think if you put a temp probe in the canopy and chiller cabinets you will clearly see the Temps really spike in both locations.
One way to vent the canopy would be if the top stood proud just a little bit to let the hot air rise out naturally. Just a small 1/8 gap along the length would make a big difference with the fans blowing in.
I would personally not trust the Apex so much. I would run half the heaters directly on Rancho controllers. Set them a degree lower than the ones on the apex. Or you could do it the other way around. I would not run the chiller on the apex at all. I find the apex is the least reliable of the options, besides the heaters themselves.
Also every pump you add is adding more heat. A 100 watt pump is pretty much the same as a 100watt heater on constantly.. Have you considered using the drain lines to feed your UV and chiller? You will have to get creative to remove most of the air going into the UV. I have run chillers this way for years. Drain through chiller then to filter sock/sump. I have never run a UV on my display tanks before. I feed my recirculating skimmer of a drain line. Other reactors can easily be fed thus way as well.
Looks like some very nice work otherwise.
@laverda I hear you on the APEX fragility. I have had no software issues through the years, but the hardware is cheap stuff. I would never use the EB as a primary relay for heat or chill, it is just there to stop a FAIL ON for either and to monitor. The heat is the BRS titanium 4 X 200w running through two calibrated Inkbirds. The Inkbirds are powered by the EB and only shut off at >82F
I haven't really ever considered connecting stuff to the drains. That would give me worries about clogging and overfilling the overflows. The water level in the overflows is already a bit high for my tastes. Plus, I like being able to dial the flow through the UV to accomplish different things, for instance for a dino outbreak I would slow it down. Right now, just running it fast for ich prevention with all these new fish going in every few days.
As to the pumps, well I am including the 4 MP60s in the count. They don't add much. The return pumps and skimmer pump are all DC pumps that also tend to run cooler.
I am sure the cabinet fans are running continuously. I will take another look at the cabinet/ceiling joint to see if there is a way to open things up more, but the aesthetic police are pretty particular.
Yesterday was the first full run with the T5s (10am to 4pm) and we are looking pretty good now.