Davej

Ok Guys,

I’m gonna have a play with various flow rates over a shower in a recirculating fishless system to see what happens.

Is more flow better? Or does it just lighten your wallet? I don't know but sure would like to.

Currently cooking up 70 KG of BHM in a submerged situation to get reasonable Ammonia and Nitrite conversion before I start.

Aim is to start off with water of a given KH (say 40ppm), 22C temp, run for 3 weeks at one flow rate, and then refill and start at the next;

Now I’m thinking of the important bits being;

• Ammonia/Nitrite conversion levels
• Nitrite levels
• TDS build up.
• KH depletion rates

Anything else I should be thinking of?

Dave

koimaster

As i see showers the higher the turn over the better my friend

Davej

That's what I have always been lead to believe.

But it's the precise point I wanna try and get to the bottom of; is the 8,000+ gallons an hour that is going over my showers at the moment really achieving more than I would get at 3,000gph - or maybe it's acheiving less?

Dave

markf1fan

i will be reading this with great interest davej.

mark

__________________
1x 2400 gallon pond
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1x bakki shower with crystal bio
1x 55w pro clear uv
1x eco 12,000
1x sequence 15,000
1x hi blow 40 air pump
and some really nice koi

muttley

I agree with mark 100%...really looking forward to see how this one develops.

Matt

go54nke

Dave, can you test for FIR only kidding...

How about a GH test, and maybe extend the test time a little, I'm thinking after the 3 week test, hit the BHM with a dose of KMN04 or MG&F and see how long it takes to bounce back.?

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All the best, Al

Davej

Hi Al

FIR, you been reading Fairy stories again

GH that will not be a problem.

OK after I have found what looks like the optimum I will give it a PP and see how it bounces back.

Dave

Aaron

I do enjoy your winter down time Dave LOL
DO in and out would be a good one
Would you say a little less KH burn with the higher turnover rate?
You would have to think so if DO does increase with the higher rate.

Davej

Hiya

Great to hear from you.

DO would be good BUT no point unless you have accurate (expensive) kit to do this and I dont.

I'm hoping to take the flow rate up to over 50k/hr, maybe +75k to see if I can induce a little "gassing off", guess the Kh burn at extreme flow rates will rather depend on whether there is any bio activity.

I'm on the fence as to the outcome, what is clear though is that the second batch of BHM I extracted from a fast running shower does nothing submerged bio wise

Dave

AlanK

Not sure if this is relevant, probably an obvious out come with hindsight, I turned my shower pump off last week as the water temps were falling rather quickly. 2days later, i had a nitrite spike from 0.2 to 2.0. I turned the pump back on and two days later, nitrite back down to 0.21.

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