90 gallon to dual kreisel conversion

ferret768

New member
Greetings!
I originally posted this on the DIY forum, but after some more looking around thought this forum was more appropriate, so i am reposting it here...


After years of reefing and plant tanking I'm in the mood for a new challenge and am planning on starting a jellyfish display. This will be a completely new adventure for me, so if anyone with experience can help me out I'd GREATLY appreciate it. So, here's the plan...


I'm toying around with the idea of taking a 90 gallon tank, and using pvc and 55 gallon drums converting the glass box to a kreisel tank with two counter rotating gyres.

The current plan is to take a 55gallon drum and cut it into two sections that fit between the front and rear pane of glass exactly, remove a roughly 8-10" strip from the top of the cylinders, perforate a 12" section at the top of each cylinder, and using a pvc frame for added support silicone both cylinders in place. A ball valve controlled spray bar will create a gentle circular flow and bulkheads placed on either side of the tank will keep the water level right at the top of the cylinders. Below is an illustration to help visualize the project


90 GALLON PLAN.JPG



For filtration I have an AG model 3 megaflow sump w/ bioballs, and a Marineland Pro 300 skimmer. I am trying to decide to run a mag 3 or 5 pump (I want a gentle flow not a vortex), and will plum it in line to prevent excess heat transfer. Lighting will be accomplished with led strips mounted at angles above each cylinder. I will also need help sizing a chiller, (the only item I have to buy thank goodness!) and selecting an appropriate specie to house in the display. I was originally looking at the moon jellies, but am concerned that there might not be enough space for a good collection as the drum measures about 22" in diameter.
 
On second thought perhaps it would work better to take the scrap from the top of the cylinders, cut out the inside to make a flange, cut an identical opening instead of perforating the drum with holes, sandwich a piece of fine mesh between the flange and drum, and bolt the pieces together with nylon carriage bolts. Also, would it be advisable to direct the spray bar over the mesh to dislodge any trapped jellies?

Any thoughts?
 
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