900 gallon stocking

[Angelphish]

Recently I came across most of the acrylic to build a tank with, so it's quite like that I'll begin building a 8x5x3 900 gallon tank in the near future. In the mean time, I'm trying to think of a couple more fish to add. I'm looking for something, rare, unique, or a wet pet. Ideally I'd like to keep it around half stocked to keep water changes minimal (assuming I'm not already at that point).

My current stock is:
Parachromis Motaguensis ~14-16"
Vieja Guttulatus ~12-14"
King Kong Blood Parrot 10"
Hoplarchus Psittacus - 14"
2x Severum 6" and 8"
Firemouth 4"
Electric Blue Acara 4"
Angelfish 3-4"
Polypterus Teugelsi 14-16"
Polypterus Ornatipinnis 12"
Polypterus Lapradei Koliba 10"
Rope fish 12"
Black Ghost Knife 12"
Papyrocranus Afer 12"
Sun Cat 8"
Synodontis Eupterus 10"
Hypostomus Plecostomus 18"
Brachyplatystoma Tigrinum 16-18"
2x Gymnothorax Polyuranodon 12" and 24"

 

[Blakewater]

No matter what you need to get nitrates out of your tank eventually. The only real way to cut down on water changes is to build nitrate reactors into your system and put lots of anaerobic bacteria media into your filtration setup. You should look into those, I was trying to do the same thing when initially setting up my 325g. Nitrate reactors turn nitrates to nitrogen bubbles that just exit your tank

 

[Angelphish]

No matter what you need to get nitrates out of your tank eventually. The only real way to cut down on water changes is to build nitrate reactors into your system and put lots of anaerobic bacteria media into your filtration setup. You should look into those, I was trying to do the same thing when initially setting up my 325g. Nitrate reactors turn nitrates to nitrogen bubbles that just exit your tank

I actually have a diy nitrate reactor running in my tank now. A few months ago I did a lot of research on nitrate reduction and found it to be the lowest maintenance option.

The idea behind the larger tank it that, even if I have a slightly larger bioload, I would have to do water changes less frequently.

 

[CarpCharacin]

900 gallons is a big tank! Are you also going to build a stand?

 

[islandguy11]

I actually have a diy nitrate reactor running in my tank now. A few months ago I did a lot of research on nitrate reduction and found it to be the lowest maintenance option.

The idea behind the larger tank it that, even if I have a slightly larger bioload, I would have to do water changes less frequently.

If you have any pics or more info about your DIY nitrate reactor please share.

 

[Angelphish]

900 gallons is a big tank! Are you also going to build a stand?

I'm probably going to build everything. I highly doubt that it would be cheaper to buy anything, nor would there be anything large enough for a tank of that size.

If you have any pics or more info about your DIY nitrate reactor please share.

63 page thread on nitrate reduction, with results, if I recall correctly. First 10-20 pages are on algae scrubbing then the rest should be on denitrification filters.

DIY Algae scrubber

Guys donyou think this would be affective in reducing nitrates ? @kno4te and i were discussing this. How large would it need to be for a 300 gal ? How many hrs of light would ut need ? And could we do away with the back portion and instead just shine a full spectrum bulb at it from the outside...

www.monsterfishkeepers.com

Come to think of it, I could probably make a really effective denitrification filter for the 900g out of a 55g barrel.

 

[amazontank]

How about a megladoras irwini catfish to cruise the bottom and a group of freshwater archers.

 

[Angelphish]

How about a megladoras irwini catfish to cruise the bottom and a group of freshwater archers.

Those are really interesting fish, but that seems like it would add a lot of bioload. At the moment, I'm planning to get a couple more Viejas, an Oscura heterospila, a pbb, and then maybe a suggestion or two from this thread, with my idea being that the total bioload of my current stock and the new fish wouldn't exceed 400-600 gallons, so I would still be a bit understocked. I feel like adding the megladoras or the archers would far exceed that.