Originally Posted by imtcurveball
i would just run a bead of 100% silicon over the crack and run your finger over it and repeat this a few times...wait 24 hours and test it
That won't work.
Best way to do this is to replace the glass, I just crack my 20 long the side, what I did was took one of my old 10 gallon n cut it into side. Redo the whole tank.
A good way to do is make a box the same size the tank is without the frame.
Install all 5 glass into the box n seal the inside. This way when ur done, slowing just pull out the box n there u go a repair tank, add the frame more seal n ur done.