2XMP40wES placement and mode of operation?

[returnofsid]

This is a duplicate thread. I also posted in Ecotech's Sponsor forum. I hope it's alright that I also post it here as I'd like as many suggestions as possible, from predominately SPS keepers.

I finally got the second MP40wES, the other day and am looking for advice on placement and recommended mode of operation.

My tank is a 200DD, 48" wide X 36" front to back X 27" tall. The tank is predominately SPS/Clams with some Zoanthids, Acans and Chalices on the bottom. The tank just underwent a huge remodel so right now, it's mostly SPS with a single clam. Much more SPS and more clams will be added and there's a possibility that I'll add a little more rock, towards the back.

Other flow includes 2XKorallia 4s that I'd like completely remove, unless it's recommended I leave them, AND my return pump is a Mag 18, plumbed through 2X3/4 SeaSwirls that are unplugged so they do not rotate. (I need to have both rebuilt as they leak out the box when rotating)

I've had a single MP40wES, operating in Nutrient Export Mode, the highest speed, for approximately 3 months. It was located about 10" from the top, centered on the left glass pane. The other day, I moved it close to the back overflow and about 8" from the top. The new MP40wES is located at approximately the same location, on the right glass pane. Obviously, I'll move their locations if it's recommended. I relocated both MP40s because the clam was getting too much flow, in it's location. I can move the clam's location, if needed, though it won't be a simple move because it's attached to a huge rock. I haven't set a specific mode for the second MP40wES yet and have it currently running full throttle...lol.

I'd like to get recommendations on placement and operation modes. I have no idea how to Sync or Anti Sync them, but am willing to learn! Any and all help, suggestions or recommendations are appreciated!


Last time I requested recommendations, photos were requested, so here they are. Even though the photos may look like it, the tank is not bare bottom. The flow, from my return pump, pushes the sand away from the front of the tank. Eventually, I'm going to re-plumb my return, to avoid this situation.

Front View

View from Left Side

Thanks all!!

 

[returnofsid]

WOW, Nothing?! I know I cross referenced this thread, in Echotech's Sponsor forum, where it's getting some activity though not much, but I'd really hoped to also specifically get advice from SPS predominate tank keepers...

 

[sanchoy]

nutrient export mode.. opposite centered from eachother. synced and opposite mode.

 

[Ostentum]

You are going to get alot of varying opinions here. I run my on reefcrest, all independent. My personal opinion is that SPS like what I refer to as Random Chaos. Turbulent flow that changes, and I have seen great results with this. So if I run them in reefcrest which is a little more random, again just my opinion and my approach. I am running 4 on my 260g, I previously ran 2 on my 110g. I do once a week put one pump on NTM for the day, then switch it back just to change things up a little bit.

 

[returnofsid]

nutrient export mode.. opposite centered from eachother. synced and opposite mode.

Right now, that's how I have them running. I connected them to one another yesterday and messed around with different settings. They are currently running in Nutrient Transport Mode, Anti-synced, at 100%. Without even programming a wave, because that makes me very nervous...lol, during a portion of the cycle a wave is created. It's actually a rather large wave, about 3" from lowest to highest point, stopping just at the top of the overflows! It's incredible.

You are going to get alot of varying opinions here. I run my on reefcrest, all independent. My personal opinion is that SPS like what I refer to as Random Chaos. Turbulent flow that changes, and I have seen great results with this. So if I run them in reefcrest which is a little more random, again just my opinion and my approach. I am running 4 on my 260g, I previously ran 2 on my 110g. I do once a week put one pump on NTM for the day, then switch it back just to change things up a little bit.

I want lots of varying opinions. Once I get enough opinions, I'll look to see who has the highest post count and go with their suggestion! LOL J/K

Eventually, I'd like to add a third MP40, on the back glass. Right now, the 2 Koralia 4s are still in operation and they will be moved to the back glass, down fairly low, blowing upwards and towards the center so they kind of collide with one another.

 

[Poseidon]

Try both on the back wall!!!! It might surprise you.

 

[returnofsid]

Try both on the back wall!!!! It might surprise you.

I've considered that...

 

[Poseidon]

Here's my theory... The MP40 is good for about 3 ft in front of the pump, and I suspect it can draw from +/- 1ft on each side of it. 2 on the back wall, in antisync mode, puts the flow in the wheelhouse of the MP40.

If my back glass wasn't 1/2" thick, I would have gone 2 MP10's on the back wall. There is a reefer somewhat local to me that is build a tank the same size as yours, and his plans are penductors on the returns, and 2 MP40's on the back wall. I think it would be great flow, and virtually disappear in the tank.