mjmods VS. Koralia

[zbrook1]

Please help me make up my mind and make the right choice. I need to add powerheads to my new 75 gal setup. I have two 1200 and one 900 maxi-jet powerheads right now that I can mod from MJMODS or just purchase Koralia powerheads.(the price being about equal) One concern on the Koralia is the size... the #3 is 5 7/8' long and the #4 is 6 1/4' long. How will 2 of these look in a standard 75 gal tank, massive and overpowering? Will the 3's be enough with my return off a 950 mag drive or should I go with the 4's if I go that route?

 

[musky1963]

I just received two of the #3's for my 75g yesterday and I was running a pair of the MJ1200's. I am very happy with the switch so far. Less of a jet-stream and puts out alot of nice wide flow. Corals seem to like them too. The #3's are not really that big and look pretty cool . You can swivel them anywhere, which is a major plus. I might end up getting another #3 to position behind my LR. Three of the #3's cost the same to run as just one MJ1200 :smokin:

 

[nebraskareef]

Koralia all the way. I have some mj mod pumps and the k pump is much nicer. EASY to mount, easy to get angles - magnet mounts...

It's worth it, no doubt about it.

 

[aninjaatemyshoe]

The MJMods are nice, but they are a bit too strong for a smaller setup. For a 75, 3 MJMods are too much IMO unless you have a bare bottom tank and can strategically place them so that they don't rip any delicate inverts to pieces. Also, the Koralia 3s are smaller than the MJMod and you can direct them easily.

 

[Rhodesholar]

I am on the other side of the fence. For the money the MJ Mods are hard to beat. My one MJ mod with two props is moving some serious water. I like My Koralia 4 but 49.99 as opposed to roughly $18 for an MJ Mod (doing it all your self) is hard to justify. The problem with the MJ Mod is mounting them.

 

[tkeracer619]

<a href=showthread.php?s=&postid=9953867#post9953867 target=_blank>Originally posted</a> by Rhodesholar
I am on the other side of the fence. For the money the MJ Mods are hard to beat. My one MJ mod with two props is moving some serious water. I like My Koralia 4 but 49.99 as opposed to roughly $18 for an MJ Mod (doing it all your self) is hard to justify. The problem with the MJ Mod is mounting them.

My problem with maximods is that they move too much water in too small a frame or strainer. If you have something that cant handle itself in current, it will get sucked in and die, no questions asked. They move tons of water and have a small strainer. I use my maximod to mix salt after it killed two anemones in its first night of use.

The koralia pumps move half the water and have 3+ times the strainer area. They don't seem so much of a blender to me like the MJMod is.

 

[musky1963]

<a href=showthread.php?s=&postid=9953867#post9953867 target=_blank>Originally posted</a> by Rhodesholar
I am on the other side of the fence. For the money the MJ Mods are hard to beat. My one MJ mod with two props is moving some serious water. I like My Koralia 4 but 49.99 as opposed to roughly $18 for an MJ Mod (doing it all your self) is hard to justify. The problem with the MJ Mod is mounting them.

Okay, since you brought up the price........how much more electric do you think you are using by running 20 watt each powerheads opposed to 6 watts? I also get some nice surface movement with the Koralias without even pointing them upwards. With the MJ's, I had to point one or 2 up and another 1 or 2 down in order to get no dead spots.

 

[chem-e]

One other thing to consider is that you can also easily mod the Koralia if you need more flow. Since you already have the MJs, you can use the prop assembly from the MJ with an Octura prop that costs a couple bucks and get a nice clean PH that moves a lot of water.

 

[Rhodesholar]

Alright contraversy!

First off we are talking the Koralia 4 which is twelve watts, not 8 or 6 and your Koralia 3 is 10. Koralia retracted there wattage specs/updated them and you can use Dr Foster and Smith as reference:

http://www.drsfostersmith.com/produ...&Ntx=mode+matchallpartial&Np=1&pc=1&N=0&Nty=1

The MJ 1200 is 20 watts, the 900 which will move the same amount of water modded is 8.5, so actually that is less wattage and more water movement then the Koralia 4 which is more then twice the price.

If you did an MJ mod and you had to point it at the surface to get it to ripple there is something wrong, or your tank is really deep. Two MJ mods in a 75 is to much flow for alott of people. My guess is your prop was on backwards because I had the same problem and thought the MJ mod was all hype. Once I got that straightend out holy wha. When I tried the double prop the water movement was unbelievable. For the record I am running (2) Octura 1435s with one cut down for the pump to spin them.

Don't get me wrong the Koralias are nifty pieces of equipment and I have one and I am very happy with it but the MJ mods IMO are still tough to beat.

 

[Rhodesholar]

<a href=showthread.php?s=&postid=9954012#post9954012 target=_blank>Originally posted</a> by tkeracer619
My problem with maximods is that they move too much water in too small a frame or strainer. If you have something that cant handle itself in current, it will get sucked in and die, no questions asked. They move tons of water and have a small strainer. I use my maximod to mix salt after it killed two anemones in its first night of use.

The koralia pumps move half the water and have 3+ times the strainer area. They don't seem so much of a blender to me like the MJMod is.

I can agree with you on this point. You have to place them strategically and not everyone will probably be able to do that with their tank setups. I run BB because I am keeping SPS and want alott of flow so that may be why they work better for me. I don't really keep anything like shrimp or the like that could get sucked in and chopped up so I don't face that issue though it is quite valid.

 

[wolfpack]

for me the MJmod is ugly. Granted the HK#4 pumps are large'ish. I personally like the clean look bett than the other options. I have two #4's now. I have a really nice flow, the live rock is as clean as ever and the fish seem to really like that additional flow.

 

[Amazon4]

We tried two MJ mod's and switched to two #3's. Like them much better. They mount easily, adjust easily, don't have to spend extra $$ for magnet mount, and they are much quieter than the MJ's.

 

[stevedola]

mjmods suck. if i had to do it over i wouldnt mod the pump in the first place.

 

[Rhodesholar]

<a href=showthread.php?s=&postid=9955789#post9955789 target=_blank>Originally posted</a> by stevedola
mjmods suck. if i had to do it over i wouldnt mod the pump in the first place.

Really? Did you buy the mod or diy? I think they rock. Mine are quiet, cheap, and move a helluva lot of water. Mine are silent. Also I have them back behind my live rock so there is no need to mount them, (which I stated is a problem) so you never see them.

I think for the money they can't be beat.

For the record mine are diy, I didn't buy the mods. No there not pretty, but I am not worried about looks since they are not seen, only results which are awesome.

Wow I'm in the minority.....fancy that.

 

[stevedola]

i bought them from Mjmod

they were very loud. would reverse. hard to angle.

only thing was they were powerful---too much for my taste.


I went with streams and would NEVER even consider reverting.

but thats my opinion and like they say...everyone has one ;-)

 

[ramullinax]

<a href=showthread.php?s=&postid=9954304#post9954304 target=_blank>Originally posted</a> by chem-e
One other thing to consider is that you can also easily mod the Koralia if you need more flow. Since you already have the MJs, you can use the prop assembly from the MJ with an Octura prop that costs a couple bucks and get a nice clean PH that moves a lot of water.

Can you give more details on this? I've got two #4's in my 120 and I don't feel like I have enough flow.

 

[surfjeepzx]

The ONLY reason you wouldn't like a mod'd maxi is because they flow too much water. If you have a small tank or have a lot of softies I agree they would be too much. If you have a larger tank and mostly SPS then they are awsome. I have 2 modded 1200 in my tank that work perfect. No noise, flow geat, and mounting's no problem if you're creative.

I even made a device that rotates the two pumps so now I have twice the bang for the lesser buck.

 

[Rhodesholar]

<a href=showthread.php?s=&postid=9957547#post9957547 target=_blank>Originally posted</a> by surfjeepzx
The ONLY reason you wouldn't like a mod'd maxi is because they flow too much water. If you have a small tank or have a lot of softies I agree they would be too much. If you have a larger tank and mostly SPS then they are awsome. I have 2 modded 1200 in my tank that work perfect. No noise, flow geat, and mounting's no problem if you're creative.

I even made a device that rotates the two pumps so now I have twice the bang for the lesser buck.

Thanks for stepping in. I am getting my *** handed to me here.

Device that rotates? You've got my attention. Do tell.

I want to restate the Koralias are great, I like my 4, there is nothing wrong with them, it's just the MJ Mods done properly are great too.

 

[J3REEF]

Ryan,

Just ordered two HK4s and two HK3s for a new 120 setup.
They are arriving on Friday, so I get to play.

I added the two HK3s just to ensure I had enough flow and it sounds like you feel the same.

I am unsure how I will position the pop cans, but thinking that I may end up with a Seio controlling the HK4's on the back pointing forward with the HK3s on the side facing each other running full out. Get to play on Friday, so I hope to have a better picture on how they will do for my new setup.

How do you have the HK4s setup in your tank?

thanks

 

[JagerEinheit]

if you are a DIY person (even remotely ala can glue and handle superglue and follow directions) you can do the MJ mod. you will have to tinker a bit, but once set right they are very quiet. if you are not as much of a DIY person. get the korelias, they are good powerheads too.