Submersible Pump/Agitator for WC Water - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 04-22-2020, 08:24 PM Thread Starter
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Submersible Pump/Agitator for WC Water

Curious what people are using to mix their water change water while it sits in the drum. I cut my tap water with 50% RO, fill up a 30 gallon drum, bring up the gH and kH where it needs to be, then throw a heater in to bring it up to temp the day before the water change. I'd like to keep the water churning over the 24 hours. I've tried a couple different powerheads and pumps but they aren't powerful enough to do much. I can see powder (Seachem Equilibrium and Sodium Bicarbonate) collecting on the bottom, which shows it isn't mixing adequately. Should I try a larger more powerful powerhead? Do they make submersible mixers/agitators that would chop up the heater and power cord? Or maybe one of those wavemaker style powerheads would be sufficient. I'm only mixing 20 gallons at a time max.

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post #2 of 5 (permalink) Old 04-22-2020, 09:34 PM
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Iíd get a pump thatís powerful enough to pump water from barrel to tank for refill through a hose. Use that same pump for water circulation in barrel. If you put a J hook on end of hose for tank refills when done doing that you can just hook that J over edge of barrel and turn it back on to criculate water in barrel. A valve right before J hook is best way to control flow rate.
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post #3 of 5 (permalink) Old 04-23-2020, 12:29 AM Thread Starter
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That's what I'm using now (a submersible pump with hose) but it isn't powerful enough to churn/stir the water substantially. I am seeing some powder collect at the bottom and have to manually stir it.

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post #4 of 5 (permalink) Old 04-23-2020, 06:37 AM
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Canít imagine any pump over 100gph not being enough to keep a 30g barrel stirred up. Maybe itís direction of pump output. You want to position/direct output so it starts water rotating in drum, that size drum even a 100gph pump should get it moving pretty fast. As with most things flow related itís as much about direction and purpose as it is GPH.

What pump do you have?
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post #5 of 5 (permalink) Old 04-23-2020, 03:12 PM Thread Starter
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Quote:
Originally Posted by DaveKS View Post
Canít imagine any pump over 100gph not being enough to keep a 30g barrel stirred up. Maybe itís direction of pump output. You want to position/direct output so it starts water rotating in drum, that size drum even a 100gph pump should get it moving pretty fast. As with most things flow related itís as much about direction and purpose as it is GPH.

What pump do you have?

I have the Songlong SL-403B, which is rated at 400 gph. I'm sure it's enough for circulating the water, but evidently it is not enough to keep powders suspended. I went ahead and bought sump pump style pump and ordered some fittings and a flow valve for it. Should definitely be able to churn the water up and keep the powder suspended so it can mix thoroughly.
https://www.amazon.com/Superior-Pump-91250-Submersible-Thermoplastic/dp/B000X05G1A/ref=sr_1_5?dchild=1&keywords=sump+pump&qid=1587654 819&sr=8-5

Last edited by mossman77; 04-23-2020 at 04:22 PM. Reason: Updated post
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