Robyn,

for a 4500 gallon pond i am building, i will only have a few dozen tadpoles, about 3 dozen frogs, and only enough minnows to keep the pond clean and active - i really dont think any goldfish - unless the agea gets out of hand - i might have them.


i dont like koi ponds or gold fish ponds.

ill have tons of plants, which might be key to this question, as plants cause detritus.

do you think that a 3000 gph. pump might be complete adequate for my pond?


when they recommend, for instance, a 4000 gph. pump for a 3000 pond, calling this more then sufficiency, i am pretty sure they are assuming koi are involved and fish food and even rocks. since ill have none of these, will i be making a big mistake by having only a 3000 gph. pump for my minnow pool?

"do you think that a 3000 gph. pump might be complete adequate for my pond?"

It could be if the system is set up correctly. I have a 2600 gph pump on a 1800 gallon pond. The pump you need depends on the mass of animals (not too large in your pond) as well as what it has to do. If it has to pump up hill more, the head will increase how many gph that you need.

"when they recommend, for instance, a 4000 gph. pump for a 3000 pond, calling this more then sufficiency, i am pretty sure they are assuming koi are involved and fish food and even rocks. since ill have none of these, will i be making a big mistake by having only a 3000 gph. pump for my minnow pool?"

As long as it has enough power to run the system that you want when things are worst (the most debris from plants, leaves, etc.), then it should be ok. If the water flows well, I wouldn't worry about it. If after a while, it seems inadequate, you can always get another pump. It's good to have a spare, backup pump anyway.