Originally Posted by beachtownlawnservice
My parents have a really small old concrete koi pond in there back patio. they never did anything fancy with it just koi and goldfish. this years drought and water restrictions and lack of maintenance caused it to dry up. sometime during the summer it developed a few cracks and now it wont hold water. its empty and cleaned out now. what is a easy and cost effective product i can use to seal all the cracks and maybe re coat the whole pond? it looks like at sometime someone re coated it with some kind of concrete/plaster? I just want to get it to hold water again.
If the cracks are not large (less than 1/4"), a product called 'Pool Putty' will do the trick, but if the pond continues to settle the cracks will get larger and require re-sealing. You can probably find this at any Swimming Pool supply store.
Any of the pond-specific coatings, Armor-Kote, Koi-Kote or liquid EPDM are not what I would call easy to apply or cheap. Marine enamel or Epoxy may be safe for use in larger bodies of water, But I would not recommend their use in closed-system ponds.