drawnitsud Posted June 21, 2022 Share Posted June 21, 2022 Hello again everyone! My 29gall tall tank received a light upgrade to the Fluval 3.0 a while ago, so I completely removed the stock lid. I was getting some heat fluctuations with the lid on (generally ~3 degrees) because the placement of the tank does not receive great air flow and we have had this ridiculous heat wave going on. I set my lights on the pre-programmed PRO mode which was a LOT of light and so now I am battling algae, but that is a whole other topic! Also of note, I removed my canister filter that was really for a 65 gallon and was generating way too much flow for my new fish (will start another topic to show them off 🙂 ) and now just have two medium-sized sponge filters running with respective air-stones. So I have a few questions about what my options are after observing a pretty healthy amount of evaporation (and subsequently bc of the cooling, my heater kicking on more): Is there a recommended way for topping off my tank (other than adding some Prime to the top-off water)? I know minerals will not evaporate and so the chances of OTS (old tank syndrome) could eventually come into play. I check my water for pH/NH/NO2/NO3 every couple of days still and because it is fairly heavily planted, I have no problems with increasing Nitrates. In fact, I add some easy green to add some back in to try and hover around 15-20 ppm. Are there lid options with the Fluval 3.0? Obviously the standard lids don't work and I am not sure if the heat fluctuations from ~73 - 76 degrees Fahrenheit vs topping off the water is better or worse. Was the fluctuations in temps stressing the fish? I realize as a new hobbyist, I am probably overreacting to that small amount because it probably happens often in the wild. But still, I was concerned. Link to comment Share on other sites More sharing options...
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