using weld-on 16 to repair my skimmer

[sillygoose]

What kind of surface prep do I need to do in order to seal the joint between the skimmer cylinder and the base? Do I need to chip out the old stuff or can I just apply new stuff where the leak is?

 

[oscarslr]

You can apply directly to each side of the broken pieces, Weldon "melts" both sides of the acrylic and cures them together as one piece.

 

[sillygoose]

So what I have is a leak in the seam between the cylinder and the base. Can I just apply a bead of weld-on right over the cracked seam or should I dig out what's there first? Will weld-on stick to itself I guess is my question.

 

[Tucson Reef]

It's hard to say, the heavy body may work as a bead but I would clean as much as possible and get it in void. The liquid will weld but needs perfect fit. If its a sloppy repair, I would go over it with a bead of Aquarium safe silicon to give it full/flex coverage

 

[Tucson Reef]

I forgot to mention, be very careful to keep sides clean, any weld-on drips or roughness will knock down your skimmer effichency