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Thread: Digiflow 6710m
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09-11-2021, 04:03 PM #1
Digiflow 6710m
Hi all,
I'm looking for reasonably priced very low flow water meter.
I think I've done this right
Calculating my trickle in/out rate at say 20% of pond & filter volume ( approx. 5700 litres) per week. I reckon my top up rate should be 0.113 litres per min. approx.1140 litres per week.
Looked at this Digiflow 6710m which seems reasonably priced but only reads from 0.2~5.0L/Min which at its lowest rate come in at 2016 litres per week or 26.88%.
Would a water change at this rate cause any issues 24-7 365 ?
Or do I just keep looking for something that reads at an even lower rate and will perhaps read a 10% change rate on my pond or 0.056 litres per min (a dribble)
Attachment 38673
EZ-pond 1200i Semi-Raised Pond, Spin-drifter BD, Oase Aquaskim, Oase Proficlear Compact Gravity, 1x Bermuda 10,000, 1x Evo-Aqua 20,000 Vari Wi-fi Pumps, 2x Evo-Aqua 70L Air Pumps , Evo-Aqua 55w UV, Aqua-Sieve Midi, 3 Tier Fabricated Stainless Shower, Hydro-Pro Z7 Heat Pump, 48" Big Blue De-chlorinator, Profi Auto Feeder & Seneye Pond Pack.
"That'll do pig. That'll do"
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09-11-2021, 08:20 PM #2
Yiu can get lower flow rate meters- Vyair stock the full range (I use these in my RO setup) https://www.vyair.com/en/digital-wat...l-mounted.html
2016 new 6000 gallon pond
https://www.koiforum.uk/pond-construc...ghlight=feline
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Ruffers22 Thanked / Liked this Post
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09-11-2021, 11:38 PM #3
Thanks Feline
I dont know how I missed that one
Sent from my SM-G998B using TapatalkEZ-pond 1200i Semi-Raised Pond, Spin-drifter BD, Oase Aquaskim, Oase Proficlear Compact Gravity, 1x Bermuda 10,000, 1x Evo-Aqua 20,000 Vari Wi-fi Pumps, 2x Evo-Aqua 70L Air Pumps , Evo-Aqua 55w UV, Aqua-Sieve Midi, 3 Tier Fabricated Stainless Shower, Hydro-Pro Z7 Heat Pump, 48" Big Blue De-chlorinator, Profi Auto Feeder & Seneye Pond Pack.
"That'll do pig. That'll do"
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Feline Thanked / Liked this Post
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10-11-2021, 12:03 PM #4
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10-11-2021, 12:45 PM #5
Thanks Scamp.
What trickle in rate do you run through yours?
I think the problem I have, if you can call it a problem, is with having a relatively small pond it is hard to reduce the trickle in to a rate that is easily metered and measurable.
At 10% I would need to reduce flow to 0.05 litres/min. or 50 ml/min. Obviously a larger pond would require a higher trickle in for the same % water change so I presume easier to meter?
I have to control the water rate into my Big blue from the wall with a gate valve type tap which is only just cranked open enough to allow a small trickle in.
Then on the outlet of the big blue I have a small irrigation type metering tap which I have found next to useless. I need to leave this fully open as it wont stand any sort of back pressure.
My water pressure is extremely high.EZ-pond 1200i Semi-Raised Pond, Spin-drifter BD, Oase Aquaskim, Oase Proficlear Compact Gravity, 1x Bermuda 10,000, 1x Evo-Aqua 20,000 Vari Wi-fi Pumps, 2x Evo-Aqua 70L Air Pumps , Evo-Aqua 55w UV, Aqua-Sieve Midi, 3 Tier Fabricated Stainless Shower, Hydro-Pro Z7 Heat Pump, 48" Big Blue De-chlorinator, Profi Auto Feeder & Seneye Pond Pack.
"That'll do pig. That'll do"
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10-11-2021, 01:35 PM #6
Hi Ruffers I'm running around 0.16litre/min so 9.6litres an hour, I would reduce lower, but the pipe run is long and underground, and doesn't seem to have enough oomph to get to the pond if I throttle back more.. Anyhow I have a 4000g pond...I understand with 5700litres you would want to trickle less than that....Cheers
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Ruffers22 Thanked / Liked this Post
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11-11-2021, 03:29 AM #7
The other option for really low flow rates is to use micro-irrigation drippers that have a fixed flow rate. For example these ones deliver a fixed 4 litre per hour, and you can fit more than one of them to get multiples of that https://www.hozelock.com/product/4-l...ating-dripper/
2016 new 6000 gallon pond
https://www.koiforum.uk/pond-construc...ghlight=feline
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Ruffers22, Manky Sanke Thanked / Liked this Post
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11-11-2021, 10:55 PM #8
As Feline has suggested micro drippers work well. I have a small pond so needed low flow rates for trickle in. I bought 1.2 litre per hour drippers and some t pieces and can choose how many to suit required flow. Got a pack of 10 pressure compensated drippers for about 8 quid online.
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Ruffers22 Thanked / Liked this Post
Running heater at low temp?
Covering the pond with polycarb should be enough to stop water temps dipping below 6C for the most...