I have a Pentair Dynamo on my 16x32' IG 21,200 gal pool. It was with the house when I bought it 12 years ago, and when it went bad, the pool store recommended another one. It's for AG pools.

It will not prime itself if the skimmer basket is empty. I need to manually add water, then turn the pump on and it primes and runs within 30 seconds, usually. Once running, it pumps fine and provides adequate circulation, as long as go the skimmer and main drain valves are open. If the skimmer is closed, it has problems pulling from the main drain only.

When it goes bad, I do intend to replace it with a self priming IG pump, probably a Pentair two speed whisper flow.