Pond pump and gallons per hour

[Creativeclover]

I am trying to decide on the pump size. I am doing a 5 by 7 foot pond 1.5 feet deep, approx 360 gallons. Will be rectangle in shape. Im debating on the size of pump. I dont plan on fish right now or in gerneral. I was thing of a 90gph pump which will circulate the whole pond in about 4 hours (6 times a day).

Think this will be good?

 

[addy1]

I have a fishless deck pond, it freezes up and is to shallow for fish. Anyways, I have a 250 or so gph pump circulating the water, which is around 500 gallons counting both ponds. The pond does decently, but algae loves to grow in it, since it is a slow flow. It does keep the mosquitoes at bay.

The deck pond also gets flushed out with the big ponds water when the stream pump turns on via the timer.

I would go with a bigger pump, the electricity usage will not be that much different.

 

[carolinaguy]

You need to recirculate the entire pond in 45 minutes with that pond size. 4 hours does not move water fast enough and promotes waste accumulation and dead pockets. Faster water helps with gas exchange. Even a large pond must exchange the total volume in 90 minutes or so.

 

[sissy]

look at all the new energy savings pumps also .The savings verses the cost will be well worth it

 

[Usman]

You need to recirculate the entire pond in 45 minutes with that pond size. 4 hours does not move water fast enough and promotes waste accumulation and dead pockets. Faster water helps with gas exchange. Even a large pond must exchange the total volume in 90 minutes or so.

that rule is with fish load , i dont think there would be that much circulation needed or waste product

 

[Big Jim]

I am trying to decide on the pump size. I am doing a 5 by 7 foot pond 1.5 feet deep, approx 360 gallons. Will be rectangle in shape. Im debating on the size of pump. I dont plan on fish right now or in gerneral. I was thing of a 90gph pump which will circulate the whole pond in about 4 hours (6 times a day).

Think this will be good?

What do you want this pond for? Frogs? Just vegetation?

Without knowing what your objective is, it's impossible to advise.

 

[Meyer Jordan]

In a fishless pond (aka Water Garden), the only valid reason for circulating the water is to inhibit mosquito breeding.

 

[sissy]

Sound also or you could just use an aerator but the babbling sound of water is soothing

 

[Creativeclover]

i would want it mostly for the sound of running water/babbling brook and vegetation

 

[sissy]

I would go with a bigger pump also if you want more noise .So guessing it will be just a pump with a fountain head and no filter .So a pump with a foam filter .If no fish to stop algae and keep water clear you could use a little peroxide or you could use a pond water cleaner

 

[budgenator]

I hate to say it but if your primary value is the aesthetics of the sound, there are so many variables, in any acoustic environment other than just trial and error. I like the sound of my waterfall the has an 19 inch weir, flowing 2,500 GPH over a 6 inch drop and has a 4 inch thick void space behind the cascade for echo, that would never work in a 360 gallons pond. My suspicion is a 90gph pump, might work on an indoor "zen fountain", but would be overwhelmed by ambiant noise outdoors; 350-500 GPH might be a better match to start with. If you going toward a sprayer head fountain, there are usually valves included to throttle back the flow.