Mo flow in my BB?

[panic]

I am debating adding more flow in my BB sps reef.

I have a 180 with 2 closed loops, both Darts at 3000gph. One runs an OM Squirt out 3/4" returns and another constant 1" return in the middle top of the tank. The other Dart runs two 3/4" returns 3" from the bottom, aimed at the bottom. Also about 700 gph on the sump return.

The dilemma is all of the detrius that settles in the rock. When I blow off the rock with a powerhead, I get STN on some corals from the ammonia spike from the newly suspended detrius.

I am thinking of adding another Dart on an OM 4-way using the over-the-top modified closed loop. I would aim them at the front glass to bounce back at the rock and corals. The corals have enough random flow to keep the polyps waving around and fully extended already.

Think this would be too much flow? 9500 gph on a 180g

 

[clkwrk]

IMO nope.

I have 141x +

 

[dreaminmel]

Question for you... when you say STN from ammonia spike from the detritus does ammonia actually show up on your test kit? I ask because I stir that stuff into my water column on a regular basis and have yet to have one single SPS react badly at all from it and never get an ammonia spike... just curious as I'm not BB so maybe you would get a spike whereas I do not?

 

[murphreef]

ditch the CL dart pump get ur self a set of tunzees in a BB and ull have more than enough flow

i wish i woulda gone with a set of tunzees on a controller and ditched my CL which is a DART on an OM 4 way

right now i have a 180 but it has a SSB i have 40x's turnover utilizing my dart my pan world 100x-x as a return and a seio 1500 and 820 at each end... i coulda ditched all the seios and the dart and gone with the tunzees using far less electricity and getting a ton more flow!

jmo

 

[murphreef]

ditch the CL dart pump get ur self a set of tunzees in a BB and ull have more than enough flow

i wish i woulda gone with a set of tunzees on a controller and ditched my CL which is a DART on an OM 4 way

right now i have a 180 but it has a SSB i have 40x's turnover utilizing my dart my pan world 100x-x as a return and a seio 1500 and 820 at each end... i coulda ditched all the seios and the dart and gone with the tunzees using far less electricity and getting a ton more flow!

jmo

 

[RichConley]

Re: Mo flow in my BB?

<a href=showthread.php?s=&postid=7688462#post7688462 target=_blank>Originally posted</a> by panic
I am debating adding more flow in my BB sps reef.

I have a 180 with 2 closed loops, both Darts at 3000gph. One runs an OM Squirt out 3/4" returns and another constant 1" return in the middle top of the tank. The other Dart runs two 3/4" returns 3" from the bottom, aimed at the bottom. Also about 700 gph on the sump return.

The dilemma is all of the detrius that settles in the rock. When I blow off the rock with a powerhead, I get STN on some corals from the ammonia spike from the newly suspended detrius.

I am thinking of adding another Dart on an OM 4-way using the over-the-top modified closed loop. I would aim them at the front glass to bounce back at the rock and corals. The corals have enough random flow to keep the polyps waving around and fully extended already.

Think this would be too much flow? 9500 gph on a 180g

with the way you have your darts plumbed, I doubt you're getting more than 1500gph out of each one. I'd take the dart with 2x 3/4" returns, and split it where the pipe is still large and add another 2 or 4 returns.

When you reduce a dart down to one inch plumbing, its an instantaneous drop of almost 1500gph.

 

[panic]

Ahh, so how many outlets will push at 3/4" using 1 1/2" intake? Or 1" - before pressure is lost. I want to move water, but also create turbulence for the stonies.

 

[panic]

I wish I had the dough for the Tunzes - I have an extra pump and the OM 4-way already.

I am assuming the ammonia spike is present. I don't get a reading of ammonia. I should test a few times the day I blow off the rocks to see if I can get it to register.

 

[DitchPlains2]

rich

rich

IMHO no you do as Rich stated,

When you reduce a dart down to one inch plumbing, its an instantaneous drop of almost 1500gph.

good piece of knowledge there, I don;t have a dart or a closed loop but that makes sense, all that friction and pressure on the water.

Hey why not use Eductors/Penductors to help boost your CL, I see most LFS near me use the, as they seem to work well on CL.

I run a Tunze 6060, Two Seio's 1100 & 820, as well as a RIO 2100(hey I got it for free) on my 55g, no detritus settling in this setup, however I do have one area right in front, it sometimes collects all the hermits into one pile lol, They just have a real hard time hanging onto bare acrylic lol I am saddistic what can I say? lol


cheers
david

 

[RichConley]

Eductors arent going to work well on a Dart. A dart is a flow pump, so theres very little pressure there.

a=(pi)*r^2
(1.5/2)^2=9/16
(1/2)^2=1/4=4/16

So a 1.5" pipe is the same area as 2.25 1" pipes.

((3/4)*(1/2))^2=(3/8)^2=9/64
1.5->36/64, so it takes 4 3/4" pipes to equal the area of a single 1.5 inch pipe. You still wont get the same flow though, because theres more friction. So I'd really say 5 3/4" pipes to get all the flow.


That sounds like a lot, but you have to realize that you'll still be getting 600-700gph out of each one. The key with getting everything out of the dart is to not restrict it at all. Theyre a pump that can move 3600gph, but have a max head of 12'. Most of your pumps rated at 12' max head move like 600gph, so the dropoff with pressure is ENORMOUS here.

 

[RichConley]

Total losses are 10.84 feet of head pressure, or 4.69 PSI. with a flow rate of 1038 GPH. Process took 78 iterations.

Sequence 3600SEQ12 (dart) on 4' of horizontal plumbing, with two 3/4" outlets, 4 45 degree elbows, and 2 90 degree elbows.


when bounced up to 1.5" pipe:
Total losses are 4.2 feet of head pressure, or 1.81 PSI. with a flow rate of 2951 GPH. Process took 350 iterations.

 

[panic]

Rich - you will save me $300. Thanks! I'm adding two 3/4s to the CL with two 3/4s and one 3/4 one the CL with the OM (a one inch outlet and a 3/4. Does that make sense?