The "Hitchhiker's Guide" to the Maxi-Stream mod
- Thread starter dhnguyen
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It was IMO as you suspected way too big and unsightly for me to use. Besides getting the most flow out of the mod, my other goal was to have something that's as small as possible without compromising the flow. My latest PVC housing is exactly 2 inches in length and the entire thing is not much larger than what the original Maxijet. I found that it's really not neccessary to make the housing so long either to great great flow pattern from it.
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Jon770
New member
I did my mod on a 900 w/ a single prop Dumas (since I destroyed all the Nitros I ordered trying to widen it to 3/16). I was very upset with the noise that it creates...it's not too noticable with the lights/fans on, but it annoys the h*** out of me at night when it's dark. It kind of sounds like a humming/buzzing noise...do you think it can be from the Dumas props, or something else like not being perfectly centered. I "measured twice and cut once", so I think I'm good on the cuts, but am willing to try again. You think it might be better by just swapping out with Nitros?
Is that with the MJ400, MJ900, or MJ1200? One prop or two with the "latest PVC housing"?
After reading through this, and other MJ mod threads, I decided to give it a try. My goal is similar to yours.....I'd like to keep it small without compromising too much flow. I'm not looking to win a MJ mod flow competition...just get a little more flow out of these things while keeping it compact. I have an MJ900 and an MJ 1200 to work with. Figured I'd use 1 or 2 of the 1.25" Dumas props (can get local for $1...Nitros not available local) with 1.5" PVC housing...thats it.
Any other suggestions on keeping it small?
Th Nitros are definitely quieter than the Dumas especially when used in the double pop design.
With just the single prop though, the Dumas is still pretty quiet. I suspect that somehow your rod and/or the PVC housing isn't quite as centered as it should be hence the noise.
There will always be some humming from these mods because of the propellers but you can use a propeller balancer to decrease this greatly too. It also help to sharpen the prop blades as best as you can
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Brent Thomann
New member
if your asking me that would be impossible, he he.
use your MJ900 and dual 1.25 nitro props to get the most flow out of the 1.5 PVC. don't waste your time with the smaller Dumas props.
That was with the double propeller design on a MJ900
If you're using 1.25" props, you can actually make the housing even smaller by using a 1.25" PVC pipe and just use a test cap to attach it to the MJ body (just glue the test cap onto the 1.25" PVC). But this would not allow as much flow as the 1.5 PVC pipe.
When my wife comes back some time next week from her Sea World/Disneyland trip with the kids, I will get the camera and upload some new pictures of what the housing looks like. Honestly it's not very large or unsightly at all.
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I would have no idea actually :lol:
The double Nitro prop design is just too strong for the thing to keep inplace inside the MJ body to spin without a guard. Everytime I tried it the whole magnet would just shoot out completely.
Now the Dumas 1.75" propeller, I can tell ya that it kicks some serious butt in terms of flow. Too much in fact for my puny 55g tank.
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