The "Hitchhiker's Guide" to the Maxi-Stream mod
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<a href=showthread.php?s=&postid=7095272#post7095272 target=_blank>Originally posted</a> by PHreef
I saw you guys talking about doing large mods and thought you'd like to see this. This is a Mag 18 modified for a 1000 gallon shark tank. Estimated flow is around 15,000 gph.
And here is that one and another larger Mag 18 mod in a 120 gl tank(the smaller mod is off). The larger mod in the rear is actually pushing a peice of LR up the opposite wall. I modified the larger for a 20,000 gallon reef tank. Estimated flow around 20,000 gph.
The pvc pipe on top is a part of the clamp/hanger.
That was some beautiful work on the screens, care to elaborate a little how was it done? Using black or gray pipes may get it to look more natural. Also the props could be much bigger, am I correct?
I got the props on eBay from an estate sale. The guy said the props were originally bought in the early 80's. They are Octura, but I'm not sure about the model #, X70 I think. 2 3/4" but had to be trimmed and balanced.
I have a Mag 36 waiting to be modified. I'm hoping it will spin the prop untrimmed
Thanks for the compliments guys
!I basically made a PVC "can" with the bolt pattern of the Mag on one end and a flow outlet on the other using PVC plate and 6" sch 40 PVC pipe. Then milled in the intake slots. Last adding the nozzle to adjust the flow pattern. Short nozzle wide flow, long nozzle focused flow.
Yes, white PVC is a little too glaring, but these are just prototypes. I used the materials I had on hand. Gray would be my preference.
I had to keep trimming the prop back until it would spin. So IME they are as big as possible for this pitch. One is about 2 1/4" and the other just under 2".
Spartan
Member
I think what might be happening with me is that after repeated testing the prop goes out of alignment since the housing and crossbrace are not glued down yet 
. I'll fix it down and see. Again this is really incredible in that you can replicate a $300+ for about 1/10th the cost. Slick work guys!
. I'll fix it down and see. Again this is really incredible in that you can replicate a $300+ for about 1/10th the cost. Slick work guys!
Frunkster
New member
<a href=showthread.php?s=&postid=7095272#post7095272 target=_blank>Originally posted</a> by PHreef
I saw you guys talking about doing large mods and thought you'd like to see this. This is a Mag 18 modified for a 1000 gallon shark tank. Estimated flow is around 15,000 gph.
And here is that one and another larger Mag 18 mod in a 120 gl tank(the smaller mod is off). The larger mod in the rear is actually pushing a peice of LR up the opposite wall. I modified the larger for a 20,000 gallon reef tank. Estimated flow around 20,000 gph.
The pvc pipe on top is a part of the clamp/hanger.
OMG!
What did I insight there P, I know I said make a bigger one but your having a laugh :lol:
That thing is raw dude.
Did you get my last email m8?
I will add pic's of my first attempt at a/any on the thread I linked to earlier soon as, I have no idea how to implement a stopper on this as it's a fixed shaft pump & a 3 blade prop suggestions please?
I thought I had mad a big un lol,
Frunkster
New member
Any chance you guy's could have a look at this thread to see pic's of the 3 I did last night.
http://www.reefpark.net/forums/index.php?showtopic=19590&hl=
Need to know how to change jpeg files to a up loadable format to save this messing about, I apologize. Anyone help this numb nut?
Still not had any sleep yet , I need to sort the stoppers out, bar that it's all good , also what do you think of the propeller selection? any good?, I have done all 3 of the "power to the people" streams with 3 blade propellers which certainly seem to move a lot of water, but & a big but - due to the power supply over here (220-240volt @ 50hz) we get more draw from the Maxie's jet's/other pumps, hence more flow & extra inlet slots to make it work efficiently.
Good news for me in one way though as when we eventually max the mod out in the US I can still experiment with the next prop/pitch size up!, bonus.
The tiny micro jet is perfect for nannos or a small frag tank, feels like there's hardly any flow exiting (in comparison) but I took it to a friends house this evening & ran it in his 15gl frag tank & it was keeping the entire tank in suspension, which the standard Maxi 1200 was not.
The Clear seal pump (discontinued Britt pump) was about equivalent to a 6100 stream by the looks of things WOW!
& I thought I had got there first with a beast, but PH Reefs has out done himself this time, good - no fantastically inspirational for us with larger tanks keep it up dude, did you try an Ehiem pump yet?, I think a 1260 would easily have the oupfh required to run a huge prop.
So far I have used these parts that are different to what you guy's are using that "may" be of help to you?.
1. prop shaft made from Titanium rod, no more were issues.
2. outer prop mag connector (rigid air line) is made from carbon fiber tent poles (available free directly after any pop festival in various gages lol) - this stuff is ideal as it's totally rigid hard wearing, easy to cut the slot in & cheep/free from your local camping outlet, just ask for a spare pole as you have snapped one.
3. 3 bladed propellers - pro's & con's anyone???
4. a large earth reducing connector for the shroud on the big one, if we could source smaller similar items the mod would be complete (imagine it reversed on a small pump, would look just the same as a Tunze with the right slots)
& Most importantly guy's - how can I implement a stopper in these fixed shaft pumps?
http://www.reefpark.net/forums/index.php?showtopic=19590&hl=
Need to know how to change jpeg files to a up loadable format to save this messing about, I apologize. Anyone help this numb nut?
Still not had any sleep yet
, I need to sort the stoppers out, bar that it's all good , also what do you think of the propeller selection? any good?, I have done all 3 of the "power to the people" streams with 3 blade propellers which certainly seem to move a lot of water, but & a big but - due to the power supply over here (220-240volt @ 50hz) we get more draw from the Maxie's jet's/other pumps, hence more flow & extra inlet slots to make it work efficiently.Good news for me in one way though as when we eventually max the mod out in the US I can still experiment with the next prop/pitch size up
!, bonus. The tiny micro jet is perfect for nannos or a small frag tank, feels like there's hardly any flow exiting (in comparison) but I took it to a friends house this evening & ran it in his 15gl frag tank & it was keeping the entire tank in suspension, which the standard Maxi 1200 was not.
The Clear seal pump (discontinued Britt pump) was about equivalent to a 6100 stream by the looks of things WOW!
& I thought I had got there first with a beast, but PH Reefs has out done himself this time, good - no fantastically inspirational for us with larger tanks keep it up dude, did you try an Ehiem pump yet?, I think a 1260 would easily have the oupfh required to run a huge prop.
So far I have used these parts that are different to what you guy's are using that "may" be of help to you?.
1. prop shaft made from Titanium rod, no more were issues.
2. outer prop mag connector (rigid air line) is made from carbon fiber tent poles (available free directly after any pop festival in various gages lol) - this stuff is ideal as it's totally rigid hard wearing, easy to cut the slot in & cheep/free from your local camping outlet, just ask for a spare pole as you have snapped one
.3. 3 bladed propellers - pro's & con's anyone???
4. a large earth reducing connector for the shroud on the big one, if we could source smaller similar items the mod would be complete (imagine it reversed on a small pump, would look just the same as a Tunze with the right slots)
& Most importantly guy's - how can I implement a stopper in these fixed shaft pumps?
spazz
New member
well here is the result of two crazy guys with access to a cnc router came up with for an improvement to the maxi mod.
the stopper works extreamly well. it dont damage the prop at all when it hits. its jus a piece of 3/16 acrylic rod slid into a 3/16 hole in the side of the 1.5 coupler. the prop is a 1.75" prop. i dont know what brand or number. but i must say its a 100% improvement in performance over the smaller mod that i posted earler. i wouldnt use this pump in a tank thats smaller than 120g. it will blast the crap out of everything in the tank. it did in mine! my corals looked like tumble weed rolling across the plain.
the stopper works extreamly well. it dont damage the prop at all when it hits. its jus a piece of 3/16 acrylic rod slid into a 3/16 hole in the side of the 1.5 coupler. the prop is a 1.75" prop. i dont know what brand or number. but i must say its a 100% improvement in performance over the smaller mod that i posted earler. i wouldnt use this pump in a tank thats smaller than 120g. it will blast the crap out of everything in the tank. it did in mine! my corals looked like tumble weed rolling across the plain.
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