Sunday, September 7, 2008

Second row

I put another row of rocks into the new pool this weekend, actually a bit more than another row. I also almost used up half of my 50lb tub of cement, I guess it will take at least another one before I am done. As you can see from the photo (sort of) the floor of the pool and one side are natural rock and the rest are stone walls. The natural rock formations were the motivation for building these pools in the first place, although I know now that they have fissures in the bottom which I should be filling with the hydrolic cement as I build the pools or else they slowly leach out the water. I don't know if it is worth while to try to fix the fissures in the existing pools, since it would mean completely draining and cleaning them. I emptied them most of the way this spring to re-enforce them with the hydrolic cement, and now they are holding water pretty well, so I probably won't bother. Especially since most of the outer wall of the lower pool, which also tends to leak, will now be shared with the new pool so it doesn't matter if the water leaches through it and in general the pond depth should be more stable. The cement is very toxic to the fish and frogs until it is completely dry, so I have to be very careful not to get any of it in the pond while I am working.

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