Greetings! No budget or space for real pools, and I am DONE buying my kid throw-away inflatables. So, I bought a nice light blue Agrimaster 300 gallon oval stock tank at the local Farm & Fleet to put on the patio for cooling off since local municipal pools aren't opening this summer. Good enough for a 10 year old & one or two younger neighbor kids to splash in on a hot day, then can serve on a friend's cattle farm once we're done with it. Planning to limp through with a $50 Intex 1,000 gph filter pump, but don't know what I need to do to keep algae & other issues at bay so hoping this forum has advice that'll help me keep the water safe & clean for kids, even though it's just a tiny thing compared to what most of you probably have. Still has to be a healthy place to cool off, regardless of size.