I see in recent email from Marine Deals, they are selling a stainless bracket for fitting bilge pump to the transom as per your set up Steps.
yeah seen those...or the cost (nil) of a little offcut from the ulrich warehouse, and drill a few holes and a plastic irrigation elbow (about $2() filled to height fit neat under the bilge pump intake.
I have used the same bracket and irrigation pickup....same clear pipes etc....a couple 98c elbows to get around cnrs.. all good.
I had mounted the old bilge pump with stainless screws.. knowing at the time maybe a mission to get them out...yep .. broke(intentional) the plastic bilge pump mount pionts off, leaving the screws there.I applied pressure would mean stressing the screws and marine sealant of the bracket to transom..
I split my live bait pick up line and works perfect.
old bilge pump system goes from pickup/ pump/ T to washdown hose with autoshut off garden attachment/ hose to wash down.
Above the T / on off tap/ into live bait tank.
The auto shut off was incase the washdown hose was not pluged in.. while under way water is forced up and inside the boat..
presure pump is
pickup/ to pump filter and pump/T/ washdown hose permanently fixed, and auto shut off fitting at the gun.
Above the T as above.
With the tap above the T
turns the live bait tank on and off
And the pressure while moving still runs the livebait tank with the old bilge pump, but not with the new diapham pressure pump (I think, pretty sure, still to be actually tested.)
If I find that the pressure pump to fill/ change water in the tank is too much will change the plumbing to suit.
At the moment short on time and put together so everything works and is very usable.
Aeration is how the water into the tank is directed.. lot surface splash and circulates inside.