The good compromise ente the paddling pool too small and gets hot too quickly, and the big pool that food 3m50 8 cubic meters and occupies the entire garden! Ideal for me and my 7 year old daughter, or the three girls together. I bought the same for my parents! No need to buy the pumped and filters etc. Proper maintenance bleach + net and a washing feet before entering discipline, and remains clean three weeks. As for goldfish I partially into the empty s plants every two days, and replaces the missing with clean water.