OK.

1. Keep the sodium bisulfate to use in your pool.

2. I can't tell you what to do with the algaecide. What *I* would do, if I was on a city sewer, and had that stuff, is flush it down the toilet a cup at a time. But, it might be illegal for me to tell you to do that, so I can't suggest that for you.

3. Tabs are harder. If no one in your household has blonde or gray hair, I would use them up, slowly, along with other forms of chlorine. Do NOT put them in the garbage. Trichlor can make big bangs, when mixed with various forms of garbage.