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Thread: 1 “ overflow
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04-08-2018, 10:58 PM #1
1 “ overflow
I have just set up my overflow from a plastic concealed cistern in my garage and have an adjustable pipe for the water line
I’m struggling with high Nitrite and though of just topping the pond over night which would give me a 20% water change
The problem is that the 1” pipe I have for the overflow to the drain isn’t keeping up with the hose on full flow and the pond is overflowing
I think I may need to be a bigger dia on the overflow, but not sure ??
does his sound right
thanks
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Phippzy89 Thanked / Liked this Post
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04-08-2018, 11:50 PM #2
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05-08-2018, 09:10 AM #3
I only have a 1 inch over flow and it works a treat but as said trickle in slowly.
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05-08-2018, 09:51 AM #4
I agree, a trickle flow should only be a trickle. What are your parameters and how are you dechlorinating a flow from the hose which is too great for a 1" overflow?
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05-08-2018, 11:01 AM #5
sounds a lot easier to slow the flow in and run it for a little longer to compensate
the slow pond build thread
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05-08-2018, 02:39 PM #6
I’m running the hose through a decorinator I can’t find the name of this unit but attached a photo of it
my readings are
nitrite 1-5 - 2
ammonia 0.29D2A68DF-73D9-4803-89AE-5CF3DDA85E9F.jpg
ph 8
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05-08-2018, 06:51 PM #7
That looks like an EA dechlorinator or a copy. These types of dechlorinators are just tubes filled with granular activated carbon and are suitable for trickle flows only. They can't reduce chlorine by anything significant at high flow rates.
Have you checked the output for chlorine/chloramine? You said in your original post that you have a nitrite problem. Nitrite bugs (nitrobacter) are puny bugs and it takes very little to upset them so, if you're putting water into the pond that isn't fully dechlorinated, that is the probable reason for your colony of nitrite bugs to be poorly developed or non-existent.
This is how to do my simple DPD4 go - no go test for any chlorine/chloramine in your top up water:
Questions AnsweredLast edited by Manky Sanke; 05-08-2018 at 06:54 PM.
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05-08-2018, 07:25 PM #8
Thanks alot
i think my next purchase will be a new dechlorinator
any recommendations ??
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05-08-2018, 08:15 PM #9
That unit can't be taken apart but, if you promise to keep this a secret between the two of us so that the EA hit squad doesn't find out and come looking for me, I'll tell you how to refill it.
Use my DPD4 test on a trickle flow rate to see if the carbon is exhausted then, if or when it is, simply saw off the end as close as possible to the input end cap, empty out the old GAC and refill it with new. Re-attach the end cap using a straight rubber connector (it will stretch over the extra thickness of the end cap) and you will have a purifier with a new lease of life.
I have to be honest and say that I've never done this myself because I don't have one of these but I've suggested this to several people over the past couple of years. So far no one has ever come back to me saying that, when they did, the thing exploded in a shower of anti-matter, toxic waste and funny shaped springy bits which means either that the idea was a success or they didn't survive the exercise. .
If your unit is exhausted, you may as well saw the end off before you throw it away, you've got nothing to lose.
PS has anyone else tried this? Was it a success or not?
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05-08-2018, 08:35 PM #10
At best you will only get 4 litres a minute out of an EA 30" and tbh I am nut sure I would trust it for long at that rate either
4600 Gallon Concrete Block and Fiberglass
2100 mm x 710 mm Infinity Window 32mm thick glass
2 x Aerated Bottom Drains and Skimmer
Filtreau HiFlow 30 Drum Filter
Bio Chamber - 140 litres K1
Bakki Shower - 30 KG Sakura Far Infrared Media
2 x 18,000 lh pumps
Heated from house boiler through a heat exchanger
Idealseal MS290
My Pond Build
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05-08-2018, 08:41 PM #11
I’ve just seen a few wall mounted units kp1 - but did use to use a simple carbon filter with a pre filter ( blue tank ) these seemed quite good but bulky
i think the wall mounted units are the same system but neater
I’m always going to be using a trickle from now on
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05-08-2018, 08:53 PM #12
Thanks Manky
i might have to try that out
mark
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