Adequate flow

meermann

Community Member
Review score
+0 /0 /-0
View Badges
Joined
Dec 2, 2020
Messages
77
Reaction score
12
Review score
+0 /0 /-0
Location
Germany
Hi guys, after I read some threads it's still unclear whether I have enough flow for my acros or not.
The problem is: I see no polyps extension at all, all of them are hidden (except one acro). I bought all the frags 5 days ago. Could such behaviour be related to reduced flow in my tank?
Current configuration is: 2 Jebao SLW 20M powerheads on the back side. Put them on the back side because of aesthetic reasons. Mode is: gyre about 100%, I guess ~2k gph each.
Should I place them on the side glasses opposite to each other?
I've attached the video, there are brine shrimps in the water column to estimate the flows.

Any suggestions?

 
A Piece of the Ocean for Every Reef Tank
OP
M

meermann

Community Member
Review score
+0 /0 /-0
View Badges
Joined
Dec 2, 2020
Messages
77
Reaction score
12
Review score
+0 /0 /-0
Location
Germany
the pic of the frags: only one acro has a kind of PE :(
IMG_9515.jpg
 
OP
M

meermann

Community Member
Review score
+0 /0 /-0
View Badges
Joined
Dec 2, 2020
Messages
77
Reaction score
12
Review score
+0 /0 /-0
Location
Germany
Your flow looks fine
Most likely chemistry or lighting, and the fact that it looks like you only have 2 fish.
What are your parameters?

Well, it's run since beginning of May so the tank is approx. 4 weeks old.

Yeah, 2 fishes only but I'm dosing NO3 and PO4. I guess it's the main way to feed the acros because I have a fleece filter and water is clear enough. But I add nutrients from the bottle.

Params those I measured few hours ago:
Salinity 35ppt
Temperature 25.5C or approx. 78F (a heater is off, but it's pretty hot outside)
NO3 ~5mg/l
PO4 0.05mg/l (both NO3 and PO4 were undetectable a couple of weeks ago, I raised them up using bottles of additives)
PH 8.11
KH 7, and I haven't checked Ca level but it should be OK as well. Salt is: TM Pro Reef 75% and TM Bio-Actif 25%.
The light is AI Hydra 32HD, approx. 70% in the peak, daylight is 6 hours and 3 hours of each dawn and dusk.

I took a photo using large lens recently, actually acros extend polyps but they are really tiny, I even can't see them with naked eye. I know they can be extended up to 1/2 inch.

IMG_9519.jpg


IMG_9522.jpg
 
Last edited:
Avast
OP
M

meermann

Community Member
Review score
+0 /0 /-0
View Badges
Joined
Dec 2, 2020
Messages
77
Reaction score
12
Review score
+0 /0 /-0
Location
Germany
Your tank is still establishing itself. Just give it some time.
But how long it could last? I heard some people have success with acros in just 1 week after start.
Should I increase water changes (now it's about 10% per week)

What size is the tank?
What’s your hydra schedule?
The tank itself is 28x20x20 and there's also a sump ~20x17x14.
The schedule: now it's on acclimation mode so ~70% of full power.

Screenshot_20210607_061801.jpg
 

PeterC99

Can’t Remember What I Did Before Reefing?
Review score
+1 /0 /-0
View Badges
Joined
Aug 28, 2020
Messages
3,631
Reaction score
15,258
Review score
+1 /0 /-0
Location
White Plains, NY
It takes a few months to get aquariums established. Start with the easier corals such as zoas. Golden rule in this hobby - nothing good happens fast.
 
Fritz

Toys For Kids Drive

Untitled-2 copy.jpg

What prizes are you most excited to possibly win?

  • CADE Aquarium

    Votes: 20 60.6%
  • Turbo's Aquatics GC

    Votes: 4 12.1%
  • Tunze Pumps

    Votes: 7 21.2%
  • SBB Corals GC

    Votes: 7 21.2%
  • AquaticLife Light

    Votes: 4 12.1%
  • Orphek Light

    Votes: 12 36.4%
  • Living Reef Orlando GC

    Votes: 8 24.2%
  • Southwest Aquaculture GC

    Votes: 2 6.1%
  • Top Shelf Aquatics GC

    Votes: 13 39.4%
  • Avast Marine GC

    Votes: 3 9.1%
  • Noopsyche Light and GC

    Votes: 5 15.2%
  • Aquatic Reef Design GC

    Votes: 4 12.1%
  • Tropic Marin Lab Test Kit

    Votes: 3 9.1%
  • Reef Diaper Kits

    Votes: 4 12.1%
MAXSPECT
Top