Stabilizer (Cyanuric Acid)

[PoolParadise]

Does anyone know of an economic source for this? (I have tried a feed and seed and they weren't able to find anything so far.)

[SalemCastles]

You can get it at most Walmarts, Lowes, or any pool store. About 12 bucks per kg here in Canada. Might be called conditioner but just look at the ingredients.

[steveinaz]

Walmart, $14 for 4 lbs. It is also called "Conditioner" on HTH labels.