Sorry if this is in the wrong spot... it kinda hits equipment and other stuff. In my 10 gallon (planted & has a betta) I have water appearing from underneath the aquarium on the stand. That doesn't worry me normally since when I do a water change there is often water that spilled on the aquarium, stand, and even the floor. However, I cleaned up earlier when I did my water change today... so that shouldn't be appearing. Especially to the point that there was water on the floor. The other issue that I just noticed today - when looking at the side angle from the tank, the water is not level... It should be level even if the substrate isn't... Not sure whether the stand is level anymore but probably not since the water isn't. The stand is from PetSmart and is ... it is made of particle board. It seems to be damp in the middle of the backside... though I think that may be because part of the filter media bag (HBH Aqua-Pure) was hanging out and dripping. So maybe the water is from that? But odd for the tank to not be level... The water is leaking very slowly if it is leaking. When I came home less than an hour ago, there was water on the stand in the front part AND on the floor. I don't plan on going to bed for another hour... so if more water seems to be escaping, I do have another tank [5 gallon] that can be setup as an emergency tank for the betta. I've never had to design a plan on this before... so not quite sure what I should do. I will likely do the following at least: Scoop out 5-ish gallons and put in other tank Scoop out betta and place in other tank Move HOB filter and filter media bag over Move heater over?* Move decoration and driftwood over * I know a heater needs to be on the tank, but I'm wondering whether a 100 W might be too much for a 5 gallon aquarium. I don't want to overheat the fish. I do have a 50w heater close at hand, but it wasn't fully reliable - the choices were too warm or too cool. What is the best plan of action? Especially with the plants (I have Crypts and Amazon Swords that do not like to be touched). I'm assuming I should get a level tomorrow and see whether the floor is messing up or the stand. I really hope it is the stand... because I did check the floor before moving the tank and stand to its location. The stand is newer than the aquarium.