Tough to say with that video, but 2100gph is a lot of water moving in that size tank. And flow doesn't need to be forceful, I have a gentle wave back and forth, but that is 1800 pounds of water moving around.
If you switched to a single small aquaclear, you would notice the thing growth that we've discussed.

I don't want to mislead anyone. The only thing I am saying is that flow is not the most important and there are other factors as important.

28x would be strong I guess if there was no liverock and nothing in front of the powerhead. There are a lot more factors in an aquarium than just an empty tank and 2 pumps. I have quite a bit of rock in front of my powerheads to diffuse the flow.

Pretty much everybody who come to my place and see my aquarium are surprised to see the flow and are commenting how gentle it is.

I did add a third koralia 1050 to add more flow on my SPS but I got less polyps extension so I removed it. I did not keep it for long. Things have been going well for 2 years just the way things are and my corals are growing well and fast, so why should I change anything?

OK then I guess I have strong flow, even though the polyps on my sps are bearely moving. I had no idea that was still strong flow.

I though to qualify as strong flow, the polyps had to move more than this. As it is, they occasionaly move, from time to time.

Here is a full tank shot. Does that quality as good flow?

http://youtu.be/AvkIATAzV5Q

Haha I wouldn't consider 28X high flow either, your more in the middle.

I've only had this piece of sps for a few days but man I can see the addiction. I want more lol. So who has frags?

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lol, you're in the right part of the world to get frags. So many awesome pieces in the lower mainland.

That's the sad part living up north it's really tough to get coral up here as there is limited SW hobbyists here and the only place that sells coral when I buy from there I feel like I'm buying a rescued coral from that store I wish Petland sold SW fish/coral

Well my first piece of sps isn't. Looking good. Tips are bleaching and its lost its red color looks brown now. Also limited polop extension. Tank parameters. Are
Sg. 1.025
Temp 80 -80.5 solid
Cal 460
Mg 1300
Kh 9
Po undetected but I get algea on glass so I know its in the tank
Nitrites0
Nitrates0
Ammonia 0
Tank is 1 year old
Bulbs are 2months old gleismens
Just changed my chemi pure elite today

I don't want to loose this coral. Suggestions? Shoukd I just ride it out see what happens or intervene?

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Feed it. Give it some Zeovit amino acid, coral vitalizer, Fauna Marin food etc...

You seem to have a low nutrient system, so maybe the coral is starving.

Tips bleaching in a low nutrient might be caused by too high alkalinity. Keep it at 8 and check if your test is good. Browning might be caused by the light or lack of proper light maybe?

Lack of polyp extension is not good. The coral seem upset about something. This often preceed RTN or STN.

Bleaching as in the color is turning more pale or STN/RTN?

What test kits are you using for NO3/PO4?