Buying big bucket of CYA or just as much as you need.

[JimK]

Thanks all..I'm sure it's okay to keep chemicals in the shed..?...I thought using the HTH stabilzing chlorine tablets would help keep the level up...but it has rained quite a bit lately and when it didn't the water level dropped and i had to put the garden hose in.

I keep my chemicals in the shed, making sure containers are closed tightly. The only exception is muriatic acid, which I keep in a covered plastic garbage can outside the shed. The reason for this is fumes from the bottles was escaping and starting to corrode the metal shelving in the shed.