"There is a chemical compound (difloroethane) used in some brands of duct tape (not all), and that chemical is toxic to fish at certain concentrations. Sorta how potassium chloride (KCl) is on the one hand used to execute prisoners on death…"
"The 2-1 refers to the Bernoulli funnel on top of the standpipe. When you think about it the faster the standpipe fills with water the faster the siphon kicks in. So the bigger the funnel the more the water flooding over it and the faster it starts.…"
I would go inverter and stick to pond pumps. Might need another solar panel but I think it would raise the reliability factor 10 fold. Like Alex said bilge pumps have a low duty cycle meaning time on/time vs off/time BUT in a timed flood…"
"Thanks for the response!
Are you saying 2-1 bell to drain diameter ratio? The IBC pics look like its 3" to 1"? WHat reducer sizez have you had the best luck with, are there any basic principles youve found? And Im using 18"…"
"How about a "hinged" screen that allows them into your sump for rearing but does not allow them back in the other way? This is assuming you want them in your sump?
Vlad, didn't I read somewhere that duct tape has is poisonous to fish?"
"A quick note on the snorkel or hole that Rob refers to: I use neither. All the air you could ever need to "break" siphon will come thru the routed bell bottom slots and back up the stand pipe. Just be sure and have an air gap or vent after…"
"Hey Hunter, what are you looking for a supercharger? I agree, if it is working you are all set. Personally I like the 2-1 Affnan design and having sold about 500 worldwide with great 100% positive feedback I have no reason to change my design as…"
"Elevation is a relative term. I am spreading my gravity power among about 10 IBC GBs in two rows of 5 so I knew I needed plenty of GP. (gravity power; did I just coin a new AP abbreviation?) In Jeff's case you are not spreading it out as much…"
3 Things I would change...
I'd paint the sump tank too - The algae are going to love that as your nutrients start to build up.
I'd put a bend on that inlet to the bed and take it down below the level of the media - The algae will…"
"I found a pretty useful thermometer for my outside aquaponics fish tank. This dual electronic thermometer keeps high and low temps for a week. Battery operated and intended for outdoor use, it lets me keep an eye on high and low…"
"i would have sent you to my How-to Build a Bell Siphon link... but it appears to no longer exist?/?!!
so here are some pics .,. i like to reduce the flow right at the bottom of the stand pipe using a 3/4" reduced to 1/2" bulk head from the…"