Cantras (starlitsiren) wrote in thequestionclub,

I have to leave my fishtank unattended for three weeks... Lighting and food is pretty much settled, the chemical balance stays even because I've got one fish and a bunch of snails in a 25 gallon tank... that's fine. no worries.

But, evaporation. I have no lid on the tank (weird size tank + filters), the most I have is the half cover that was holding up the light (now burned out and currently replaced with a vacation-timered lamp). I don't want to come home and find that something died because the water level dropped three inches and threw the chemical/salt balance off...

I'd saran wrap the top, but I think that'd cause a greenhouse sortof effect?

So, the question is: would plastic wrap work(not air tight, obviously)? If not, what? (besides getting a real lid)
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