Thanks for the recommendations.Are you sure its not the weather? Even though the temp is lower now I find that my tanks are still warmer than usual as the lights warm it up and it does not cool all the way back to the "set" temperature by the time the lights come on again. My tank with the tightly fitting lid is still up at 26, although the others have come back closer to 25 which is where I have them all set.
I am slightly paranoid about heaters as I have had 2 fail over the years, one stopped heating and one failed to turn off. Here is my recommendation if you are willing to spend a bit more. https://www.fishforums.net/threads/...s-out-of-the-hobby.457738/page-2#post-3875101
Amazon does not currently have the one I use in stock but I have just bought one for my newest tank here. https/www.ebay.co.uk/itm/Inkbird-Pre-wired-Heating-Thermostat-ITC-306T-for-Aquarium-Heater-Tank-Control/323756106120?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649. Even though the seller information says China it was postmarked Leicester and arrived within two days
I don't think it's the weather - it's cool here (in t' North), but we are going to keep an eye on the heater today and see how it goes.
The water getting warmer would, of course, increase evaporation and therefore condensation. We will see.
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