Not quite sure what you need to do but that selleys aqua-U-need it is
amazing stuff for small leaks
grab it from K-mart or a swimming pool shop
saved me ass many a time on big stuff too
sorta chewing gum epoxy
quite safe espec in 500 gal
:-)


wrote in message
oups.com...
I need to control a leak in my 500 gallon koi pond. I will need to
seal some rocks onto the rubber liner. What products would not
endanger the 5 mature koi and 2 frogs present in the pond? Thanks.