I want to repair a small leak on an old tank - what's the best method?
Recently I fixed a new tank successfully, I simply reapplied the Selleys stuff over the top of the manufacturer's silicon (after discussing with the maker over the phone) and that did the trick no problem.
However for this old tank I was thinking of first removing the original silicon entirely from all the inner corners, then reapply new silicon to those crevices.
Is this the best way?
What's the best tool/method to remove the old silicon?
Should I just use the Selleys Aquarium Safe Silicon or is there a more structurally safe brand to use?
Thanks.