Algae in system

[Amy]

1. Gross water volume of your complete system (incl. sump etc.) - US gallons / UK gallons / liter
-150gallons aquarium with 20gallons sump
2. Net water volume (incl. sump etc.) - US gallons / UK gallons / liter
Approximately 150g ?
3. Are you using a CaCO2 reactor or other technique
2 parts dosing, alk, cal and mg.
Activated carbon through reactor
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)
Bubble King Mini 180 Rated for 100-200g heavy load
8. What are your actual PO4 and NO3 levels
PO4 and NO3 are both reading 0
9. What are your actual Ca, Alk and Mg levels
Alk:7.3 CA:450 MG 1440 Potassium: 380
10. What filtration method do you use (refugium, DSB, Miracle Mud, etc.)
Zeovit only
11. Type of light (Watt, color temp, how old, etc.)
4 - ATI T5 with 6 - Maxspect led modules, about 500w, almost new, around 15k
12. What corals do you keep
Almost only SPS
13. Tissue color (light or dark)
Light
14. How long has the tank been running
11 weeks
15. Why do you want to use the ZEOvit system
I love zeovit tanks
16. Any supplemental dosing (type, amount, why, etc.)
Only zeovit
17. Live rock (how much, how old, etc.)
150lbs, about 50 pounds of dry rocks and 100lbs of liverock from LFS
18. Any present problems
Green long slimy algae growing quite quickly, I am scrubbing the rocks a week.
19. Problem description (tissue loss tips, tissue loss base, diatom bloom, algae, etc.)
Algae does not seem to go away, polyp extension seem to have reduced
20. What test kit do you use (how old, recently switched, etc.)
Salifert and trident from neptune
21. Present dosing, amounts and intervals (ZEOvit, ZEObak, ZEOfood, ZEOstart, ZEOspur2, etc.)
Zeovit: 1.5litres with 150gph
Zeobak: 6 drops twice a week
Zeofood, use to do dose, I have stopped because of the algae
Zeostart twice every 12 hours .5ml each time
Biomate: 6 drops twice a week
Just bough zeozym which I'm planning to dose once a week
22. Other water parameters and water stability.
Salinity 35, and parameters extremely stables but I know they are a bit high at the moment
23. Which salt brand do you use
Aquaforest

I've also done a 10 days treatment with coral snow and bak about 1 month ago which did seem to help but everything is back, in my previous 45 gallons I did have the same issue but eventually the algae was completely gone but this time it looks worst for some reason.

Thanks for the help.

[G.Alexander]

Can you please post a good picture of the algae ?

G.Alexander

[Amy]

[G.Alexander]

Thank you for the picture but I can not see it really clear if those are just hair algae. Can you please post a closer picture of the stuff ?

G.Alexander

[Amy]

There it is, hopefully that helps.

Thank you.

[G.Alexander]

Thank you for the additional pictures but I am not 100% sure if those are green hair algae or bryopsis algae. Basically the algae do not really look happy as they already lost their intensive green coloration, I do also expect their growth has speed down already.

Your system is still very young so I would give it some more time while regular remove the algae manually in conjunction to dose 2 ml Coral Snow / 25 US gallons every other day for some time. If you keep them short a sea urchin might be helpful additional. Your dosing regimen is fine, I would not change it at the moment including ZeoZym. You can dose it additional with 1 spoon 2 x weekly until the algae have gone.

G.Alexander

[Amy]

Perfect, I'll try this, thank you.