Too much current?

[1tang2nemo]

Hello I have a 45 corner and just done the maxi jet mod on my mj1200 and it moves so much water my fish are constantly moving backwords. Does anyone have any experience with this mod and do you think it is a bit much for my size tank? I have the mj about 6in down pointed strait across and the current is digging holes around my rock work.

 

[miaheatlvr]

Originally Posted by 1tang2nemo
Hello I have a 45 corner and just done the maxi jet mod on my mj1200 and it moves so much water my fish are constantly moving backwords. Does anyone have any experience with this mod and do you think it is a bit much for my size tank? I have the mj about 6in down pointed strait across and the current is digging holes around my rock work.

Why dont you try setting the output upwards, this will also break up any proteins on the surface. I dont not think a maxjet 1200 is too much for a 45g.

 

[1tang2nemo]

well it is pointed strait across about 6in down and the water splash's out sometimes already. If I point it slightly up the rippels will surely land on my floor. I thought about pointing it slightly down but I don't want a dust cloud. Also it is a mj 1200 but I done the mod on it and I think it is 1000 gph or more. I wish I could post a video do you know how? Also thanks for the quik reply.

 

[reefforbrains]

Whoah tiger!, a modded MJ1200 in a corner tank. Thats too much IMO. Most modded MJ's output more into the 2000gph range. Thats around 100x turnover give or take your given rockwork ect..
You could put it facing against the glass to defect some of the flow but even then its going to try to dig out the rockwork.
If you did the mod then your familiar with the internals correct?
The prop you glued on the impeller shaft. Just re-open the case and shave down the bladed tips on the prop. Do it slowly and try to do it evenly to reduce the pumps GPH without hurting the mod. You can reduce its flow this way without having to get creative or add anything into the tank that might be an eyesore. Later if you want full flow again from your MMJ then just toss on a new full sized prop.
What about burying it IN the rockwork blasting against a rock to buffer the flow?
Or I should ask, who in the heck advised you to use a single jet engine for your tanks flow instead of the more common triple MJ900 for your tanks size?
-RFB

 

[1tang2nemo]

Well I love diy projects and didn't think it would be this much current. I think I will just buy another impeller and go back to my old setup. Anyways if anyone is wondering about the mod it is worth every penny and min to mod the mj if you want more flow.

 

[stanlalee]

Originally Posted by MiaHeatLvr
Why dont you try setting the output upwards, this will also break up any proteins on the surface. I dont not think a maxjet 1200 is too much for a 45g.
a "moded" maxijet is one with a hobby propeller fixed to the shaft. It supposedly pushes up to 2000gph. its probably a bit much for a 45g corner and certainly one thats not bare bottom.

 

[miaheatlvr]

Originally Posted by Stanlalee
a "moded" maxijet is one with a hobby propeller fixed to the shaft. It supposedly pushes up to 2000gph. its probably a bit much for a 45g corner and certainly one thats not bare bottom.

AHH,, MODED? I have a standard that goes into my protein skimmer and its purfect, Im not familiar with these moded,, but it looks pretty

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