Thanks reefie, that means I will spend less money than what I thought

I will try to do it again. The last time I was spending almost the whole tube of the epoxy and it still didn't harden fast enough for me to have enough patience to hold it on, even with all the powerheads turned off for 5 minutes. The epoxy was falling apart after like flour and caused a terrible cloudiness in the tank for that whole night. I couldn't make it as a Mexican stand-off as cuz said.