I have a 20 gallon long with a Marineland 280 filter, glass top and gravel. No heater or light. It's an older tank that has been kept running but never used in over a year! The glass top is clouded and the plastic strip for the back has never been cut. There were some trumpet snails in it, but I have no idea if they are even still alive as I never 'feed' this tank anymore. No reason to. I could not see any glass scratches as it is filled with water and in my dark basement. There are some chips in the plastic frame and some scratches on the side trim-does not effect stability of tank. Pictures show this.
I will let this go for $25.00 if you're interested in it. I'm in Southbury.
If you need a light strip for it, I have an Oak 30'' all glass fluorescent strip I can sell you for $25.00 too. Let me know. Thanks.