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Message: [QUOTE="crsublette, post: 296097, member: 3847"] What is considered "healthy water circulation"? ... as long as your fish are not getting tossed around by the water currents and do not get caught into the pump's suction... then you're good... My small pond (9 foot diameter, 11~14 inches deep) is really more of a rock water feature pond with fish and occasional plants. My small pond is about 450 gallons and I am pushing 9000gph.... 7000gph for my stream so that I can have a really good looking deep rush of water... 2000gph for several fountains and 8 gentle water jets in the pond. I spend about $130 a month on electricity for pumping, but everything looks frick'n awesome and I am trying to make the backyard into my vacation paradise rather than going out; so, I figure $130 a month is acceptable compared to what I would spend by going on an actual paradise vacation. ;) :) I have 4x 1.5 inch suction intakes at various points of the pond, which reduces suction at the inlet to nearly zero, and, each suction intake uses an Anti-Fish Entrapment device ([URL]https://pondevolution.com/index.php/anti-fish-entrapment-device-3.html[/URL]). The 8x 3/4 inch water jets are very gentle... when putting your hand to feel it, they feel like the powerhead water current jets used on aquariums.... And these are angled 5 inches away from my pond walls so to further reduce water turbulence yet still create enough water movement to circulate the pond water. This is TREMENDOUS over kill for you, but I am just trying to give you an idea that all depends on how you design... At bare minimum... I think you need to at least circulate the water in your pond at a rate of 2 times per hour... So, if your pond is 300 gallons, then use a pump that gives 600gph (after fiction loss); so, for a small pond and with little friction loss, a 800gph might do the trick... depending on what the curve on the pump's flow chart states... All pumps come with a flow chart... Some say only 1 times per hour... others say more... so depends on who you ask and what you are trying to achieve. [/QUOTE]

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