Each diagram you've made has been more efficient than the previous one... so you get two points gor progress!
TheBlackPearl;4139148; said:
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This one is almost there!...
Two chambers for sponges is pretty good. I would do four, but you can stack two grades of sponge per chamber and still use 4 grades...
You get two additional points for figuring out the plant chamber. The baffles on both sides of the plant chamber need to be bottom opening, just like you have drawn. Although I suggest making them a little higher so the water depth is 1/3 ~ 1/2 the depth of the tank.
Switch the ceramic noodles and the purigen. Because you'll be leaving the ceramic noodles for months if not years without cleaning it. The Purigen will be removed, recharged and replaced every month or two.
Then put both sets of "Blue Bonded Filter Pads" on bottom and both bags of Purigen on top. There's no benefit in staggering them... adn there is benefit to maximizing mechanical filtration before the purigen.
The last baffle to the right is to high. The water in the last two chambers will be as high as the last baffle. By lowering the last baffle you lower the water level int he last two chambers which will allow a portion of your bio balls to be above the water level in their chamber. If you use a drip plate above them this will make them "wet/dry" media, which is the best way to utilize bio balls.
You can use a layer of quilt batting on top of the drip tray to both filter the water (fine mechanical filtration) as well as distribute the water across the entire drip tray.
I'm making the assumption this diagram is not to scale, as the pump chamber is unnecessarily large in the drawing... the chamber to the right of the bioballs only needs to be an inch or so thick... the chamber to the left of the bio balls needs to be much more than an inch, but probably not as large as it appears...
You want the plant and bio ball chambers to be the largest and to be as large as possible. If I were in your shoes I would make the plant chamber a bit larger than the bioball chamber...
With the design you have shown, you could use "Lucky Bamboo" (
Dracaena sanderana) just like you have drawn with Java Moss tangled in the roots. Both of these are hardy plants that will thrive with almost any lighting.