[njsteve]

Nice! What is your air temperature out there? The stuff works a lot better when it, and the ambient temperature are warm.

If you cover the kiddie pool with a plastic sheet and put the sump in the bottom, it allows for the liquid to gather and flow down into one main spot instead of a big flat bottomed kiddy pool. Picture a swimming pool cover after a rainstorm, all the water gathers in the center. Takes much less liquid to do the job. Less evaporation, too.

Also, the process really works better if you steam clean and/or degrease everything first. You get much less contamination of the liquid and more clean surface area for the anti-rust liquid to attack.