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  #1  
Old 06-22-2017, 08:10 AM
Heiki Heiki 目前離線
ZEOhead in Training
 
Join Date: Aug 2014
Location: Belgium
Posts: 30
Default Green cyano problem

Hi all,
tank is doing good, sps have some good colour and really nice growth but have green cyano all over the rocks, sand en even glass.
Every time i blow it away en sucks it out of the tank it gets back in a couple of days...

1. Gross water volume of your complete system (incl. sump etc.) - US gallons / UK gallons / liter
880Liter
2. Net water volume (incl. sump etc.) - US gallons / UK gallons / liter
750 Liter
3. Are you using a CaCO2 reactor or other technique
Yes, self made. Water stays +50 hours in reactor chamber with a PH of 6,25
4. Are you using a PO4 reactor (how long, how long ago, etc.)
No
5. Are you using Ozone
No
6. Are you using UV
No
7. What skimmer are you using (type, rated water volume)
Delter SC2560
8. What are your actual PO4 and NO3 levels
No3: 0
Po4: 0,02

9. What are your actual Ca, Alk and Mg levels
Ca: 400
Kh: 6,8
Mg: 1280

10. What filtration method do you use (refugium, DSB, Miracle Mud, etc.)
None
11. Type of light (Watt, color temp, how old, etc.)
12x 54W T5
12. What corals do you keep
Only SPS
13. Tissue color (light or dark)
Very good color, not as light as the real zeovit tanks
14. How long has the tank been running
1,5 year now
15. Why do you want to use the ZEOvit system
To keep acropora at they're best
16. Any supplemental dosing (type, amount, why, etc.)
No
17. Live rock (how much, how old, etc.)
130kg life rock
18. Any present problems
The green cyano, but that's all
19. Problem description (tissue loss tips, tissue loss base, diatom bloom, algae, etc.)
See above
20. What test kit do you use (how old, recently switched, etc.)
Salifert, nyos, hanna.... all relative new
21. Present dosing, amounts and intervals (ZEOvit, ZEObak, ZEOfood, ZEOstart, ZEOspur2, etc.)
Zeobak, as the manual says
Zeovit 1,75 liter
Zeofood (not )
Zeostart 0,35 ml twice a day
Iodine 7 drops 1x/week
spongpower 7 drops 2x/week
Coral vitalyser +-14 drops 2x/week

22. Other water parameters and water stability (salinity, temp, etc.)
Sal: 1026
Temp: 26 degrees

23. Which salt brand do you use
Reefers best, waterchange 10% every 2 weeks
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  #2  
Old 06-22-2017, 11:53 AM
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Bugger Bugger 目前離線
ZEOdabbler
 
Join Date: Oct 2012
Location: Canada
Posts: 1,232
Default

Have you tried coral snow?
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  #3  
Old 06-22-2017, 01:00 PM
Heiki Heiki 目前離線
ZEOhead in Training
 
Join Date: Aug 2014
Location: Belgium
Posts: 30
Default

Damn, forgot that.
Add 2x/ week 7ml coral snow
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  #4  
Old 06-23-2017, 03:39 AM
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G.Alexander G.Alexander 目前離線
ZEOadmin
 
Join Date: Jan 2005
Posts: 35,943
Default

Can you tell if the stuff does grow just at some areas or if the whole tank is affected ? Please if possible also post a picture.

G.Alexander
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  #5  
Old 07-07-2017, 01:32 AM
Heiki Heiki 目前離線
ZEOhead in Training
 
Join Date: Aug 2014
Location: Belgium
Posts: 30
Default

Hi Alexander,

no it does grow everywhere: rock, sand and even on the glass... (only where light gets)

I stopt dosing food sources and sponge power a while ago
It's relative easy to blow it off but it does comes back...

Pictures below:

http://
http://
http://
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  #6  
Old 07-07-2017, 02:40 AM
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G.Alexander G.Alexander 目前離線
ZEOadmin
 
Join Date: Jan 2005
Posts: 35,943
Default

I have seen those kind of cyanos when amino acid containing products are dosed in the past. Also iodine does have a growth effect to them. Have you already tried to stop dosing everything except Bac and Start while additional removing them regular manual for some time ?

Also dosing a mixture of 16 ml CoralSnow and 8 drops ZeoBac daily for some time additional would support this process.

G.Alexander
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