while I was browsing my local thrift store, I came across a 10 gallon tank with fake plants, decor, a filter, and a heater. of course I bought it.
having come home, I tested the filter (it works) and washed the decorations. but my real question is about the heater: should I use it? it seems okay, but I haven't tested it yet. on the inside, there's this little thing that has "Penn plax" printed on it. should I use this heater? do you think it's corrupt? I'm not sure how old it is.
Thank you, ~Saphira