diminishing silicon seal
I have been thinking about making some changes to my tank in the near future before it gets too cold for people to mail me new plants and the like.
I'm concerned about my tank's seals however and don't want to start any big projects if I may need to reseal soon. Any advice? This picture is what it looks like at the worst part, and it's pretty much been this way for almost a year and never had any leaks. Should I just let it ride?