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#426485 10/13/15 07:31 AM
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looking for afffordable aeration for small pond

1/8 acre +/-
max depth 8 +/- ft

what size etc not sure where to start?


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Take a look at the Pondmaster line of linear pumps. Rebuild kits are available for them. Just do a search, lots of places sell them.

I run 4 of them constantly and have had to put kits in two of the four after about approximately 10-12 months of continuous use. Rebuild kits run from $8 to $15 depending on where you get them and the shipping. I ordered 4 at $8 so the shipping would not be so much of the total. have used 2 kits so far. Takes about an hour for me on the first one and now about 15-30 minutes once I am more sure of the proper assembly. Not rocket science. Probably a competent person that did them regularly could do one in 10 minutes. Me - I'm old and slow - what can I say?

They make several different models depending on the air volume needs. I use the AP100's.

Only good to about 9-10' maximum depth because air flow is drastically reduced as depth increases (because of the design of linear diaphram pumps as opposed to a piston or vane positive displacement pump).

Probably other brands are better. The Pondmaster line is just cheap to buy and has rebuild kits available.

Last edited by snrub; 10/13/15 07:57 AM.

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Are you looking for plug n play, or a DIY system?


"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
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Plug N play mainly but DIY could work if its not complicated...LOL
assuming DIY will be less expensive?


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Probably, but there's nothing quite like the ease of dropping a turn-key system in and firing it up. I think a lot depends upon the budget....have you checked out the pond lyfe systems from Vertex?


"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.
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$1,300 is not in my budget


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Bobby, I just received a brand new (out of box) 1/3 hp Gast 75R compressor/pump off Ebay for $80 shipped and they retail for over $500, along with a 30 day money back guarantee. The used ones were $250+ with no guarantee or return policy.

I know this pump is major overkill for your 1/8a pond, but point being there's deals out there to be found, with a little patience (of which I have little smile ) I'm sure you can find one cheap. Then it's a matter of finding a diffuser.

I also have 2, 100' unused rolls of 5/8" Bottomline weighted tubing. Let me know how much you need to run from the pond's edge to the diffuser and I'll ship it to you FOC.


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I agree with Keith's Ebay comment. I've purchased several compressors, new and used, and have been well satisfied with all.


"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.
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is a vacuum compressor pump the same thing?


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In some cases, yes. If you utilize the output it's a compressor, and if you use the input it becomes a vacuum pump.


"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.
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OK, so a vacuum compressor pump would work for areation pump for pond then...

I dont need a vacuum , I have a cleaning person for that...LOL


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Ask the seller what the outlet psi measures or the PSI rated for the compressor. It is also good to know the CFM rating (cubic feet per minute).


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Yeah I also got a 1/3 hp gast off of ebay and am very happy with it. You may need to make the manifold for it and get a filter for the vacuum side and maybe a gauge but the pump is the hard part to find at a decent price.

I got all my extra stuff from Bill Cody, like my pressure gauge and my relief value, filters stuff like that. He was very helpful with all that.

Like said above 1/3 may be overkill, but 1/4 hp pump would be good like bill said check out the specs. Don't worry about your questions ask away I had the same questions when I first started doing this. Even about the vacuum pump... LOL. No question is a stupid question when your trying to do something for your pond!!

RC


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As rull of thumb what PSI and CFM should I want for aprox 10ft deep.

I understand the CFM drop drastically with every foot of water dept. I assume the the more the psi the compressor has the more CFM it will have at depth?


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psi is 6, cfm depends on the diffusers and what they need to operate.


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Yeah things can get a little complicated quick if you let them. If your going to do 2 diffusers at 10 feet a 1/4 hp gast should do that just fine easy in fact! My gast will run at 15 to 18 feet my normal water height is 9 feet and it boils like crazy at 9 feet. So if I have this right here is the deal.

You have to figure 1 psi for every 2 feet of water. So like Esshup said 6 psi would give your about 12 feet.

If the pump says it will do 3 CFM then you need to look at your fuser specks and see what it take to push the fusers per fuser. For example.


If I have to vertex fusers that will push at 1 cfm lets say I think it's less than that but lets keep it simple here.

I could then use 3 fusers in my setup cause my pump will push 3 cfm with 1 cfm going to each fuser. If you go with 2 fusers then you have 1.5 cfm going to each fuser which is ok too. Your fusers will have a min and max cfm rating. like .5 min, and 3 max per fuser. Your just have to make sure yoru in that range and your good. Which most times you are if your only using 2 fusers. Where this comes more into play is when your start adding 4 and 5 fusers to a group. Then it start to get tricky. Anyone please correct me if I am wrong here I am no expert on air but have learned a lot from here over the past 5 years.

RC

Last edited by RC51; 10/14/15 08:26 AM.

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Without looking up the specs, I think the Vertex diffusers are rated to "open" at .5 cfm and will take 4 or 5 cfm max. It's not good to run them at the minimum, all you need is a slight drop in cfm and the diffuser won't work.


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