I'm using mortar for the falls on the waterfall. To hold the Fall rocks in place and fill up the empty spaces.
To avoid as much as possible poisoning the fish I'm trying to seal it. ThoroSeal was suggested but the Lowes near me doesn't have any. They do however have SunnyDry and I was thinking of using that. I'm also considering using the Great Stuff foam. I had bought some Black Pond foam and attempted using that on the falls before the redo. However it just kept coming out of the can and was a total waste. For the price difference between the two foams what exactly is different? One toxic and the other not?
To avoid as much as possible poisoning the fish I'm trying to seal it. ThoroSeal was suggested but the Lowes near me doesn't have any. They do however have SunnyDry and I was thinking of using that. I'm also considering using the Great Stuff foam. I had bought some Black Pond foam and attempted using that on the falls before the redo. However it just kept coming out of the can and was a total waste. For the price difference between the two foams what exactly is different? One toxic and the other not?
