membership updated.

You might want to look at the recipe, here:
Super-simple-pool-chemistry-recipe-for-Intex-type-pools-start-up-amp-routine-care.

I'm not sure that SWCG (Salt Water Chlorine Generator system) won't actually make a pool that small much easier -- and just be clear, a SWCG is just another method of *delivering* chlorine to a pool.