I was looking at modding to of my MJ 1200's. Does anyone have experience with them on a 4 foot tank? (75 gallons to be exact) I was planning on mounting one on each end of the tank. I am worried that 2000ish gallons flowing from each of them will kick up all of my sand. Its a tiny bit larger than the sugar sized. Still really fine though.
MJ mod 1200 Too much flow??
- Thread starter Rye_84
- Start date
motocrosstcw
Member
i have a modded MJ 600 in my 29gal tank and i want more
Ratpack
Active Member
I have a 75g as well and I have the MJ mods, however they are not on MJ's. I put the props in my Koralia 4's. Not quite as laminar and someone ran a bag test on one and it is closer to 3000gph and a lot quieter. I have two of them along with another regular Koralia 4 (just need to buy the kit for it)and a Koralia 2 in my tank. So if the numbers are right, I have about 8000gph in my tank which is over 100x turnover and when the third K4 is done, it will be close to 10,000gph (if you believe the numbers they publish). But to answer original question, two will be fine but it will move some of the sand around unless you keep them pointed level or upward. I have a bare bottom tank so it doesn't effect me.
Ratpack
Active Member
Al, get the large prop from the MJ mods and add them to the K4's you have and you will be a lot cheaper. It is simple to do, just reverse the prop on the kit (mj spins opposite K4) and the kit slides on the K4 shaft, no other mods to do. I bought mine from Triton Aquatics for $10 each plus shipping.
BigJay
Well-Known Member
I'm a Koralia fan too. My modded MJ is the next thing coming out of my tank. I had my Koralia set on a 15 minute random off/on and it never failed to start. It clicked a few times thats it. My modded MJ on the other hand freezes everytime there is a power spike, power outage or I have to turn off the PH's. Sick of having to stick my finger in it to get it turning.
Great flow for a cheap price but IMHO Koralias are a better bang for the buck.
Great flow for a cheap price but IMHO Koralias are a better bang for the buck.
Sure it wont hurt to give it a try. Just dont aim them down at your substrate. The mods I did you didnt need to buy any part, just a hacksaw and a drill... watch this and see
YouTube - MaxiJet Powerhead Mod
All of this guys videos are great
YouTube - MaxiJet Powerhead Mod
All of this guys videos are great
Ratpack
Active Member
If you are referring to the stock props in a MJ, then no. The props I have in mine are from the mod kit and they just drop in. The large prop fits perfect in the K4, so for a K3 you might have to go with the smaller prop.