Advice needed: brown algae overtaking during fluc/cipro treatment

[JoJosReef]

Day 3 of treatment with 0.25mg/mL ciprofloxacin for brown jelly disease on hammer and potentially elsewhere
Day 3 of treatment with 20mg/L flucozanole for bryopsis
1mL vibrant after weekly water changes for past 4-5 weeks
Stopped adding Microbacter7 about 5 days ago (was seeding Seachem Matrix in AIO chamber for next tank--right now I don't know if it's a good idea to use it!)
Recently removed 3 pieces of rubble that were overrun with GHA and bryopsis

NO3 is between 0 and 5 on API test (down from usually 5-10)
PO4 is either 0 or 0.03 on Salifert test (i cannot see any difference between the two)
--> I removed chemipure blue packets before fluc/cipro
--> added spoon of Phosguard because I read that fluc could cause spike in PO4 as algae dies

Photos below. See that the rocks have become "fuzzy" with brown all over them (whereas previously non-fuzzy green all over). Sandbed also has lots of brown patches growing very quickly. I don't know if this is Dinos since NO3 and PO4 seems to be tanking, or just GHA and bryopsis going a bit brown due to the fluc treatment--I am afraid it's the former. Actually, I don't know what all of this is--I thought the patches on the sandbed were bryopsis, but now it looks more like a mat with strings coming up from it...

I am not sure what to do since I'm in the middle of Cipro and Fluc treatment. I could stop the Fluc treatment for an intervention and restart later, but I need at least 3 more days of Cipro for the BJD (hammer has perked up very slightly, so I'm holding out hope it'll make it through).

Advice very much appreciated. I won't have a microscope until Xmas. What is the minimal magnification to see dinos? 400x? 40x? 10x?

Zoas are not happy.

Silver lining? My conch seems to have woken from its weeks-long nap.

 

[vetteguy53081]

You havhair algae along with diatoms
Reduce white light intensity and siphon bedding and add a few snails such as cerith, nerite, margarita and trochus
Check phosphate levels also.
Is tank at or near a window?

 

[JoJosReef]

You havhair algae along with diatoms
Reduce white light intensity and siphon bedding and add a few snails such as cerith, nerite, margarita and trochus
Check phosphate levels also.
Is tank at or near a window?

Phosphates at 0 to 0.03 (Salifert). I have difficulty with the cokor differential at that level though.

I have the whites down to 10% on the Fluval Marine 3.0 and zero on the reef bar pro (similar to a reefbrite bar). should still be hitting around 75ish par on the sand bed with just the blues.

Bryopsis is in there too. I'll try to get some better picks of the ferns--can also tell they are different when trying to pluck them.

I put the green monster UV back in the DT and having it on 24/7. Hopefully that helps--should if it's diatoms, right? I have been worried it is dinos but I can't microbiologically confirm yet.

I'll try to get some ceriths--only have dwarf ceriths now and 6x trochus (and a conch).

Thanks!!

 

[vetteguy53081]

For bryopsis- you will need pull as much as you can by hand and finish by removing the roots with a dental pick or snail crochet needle
You Must remove the roots or it will keep coming back
After removal, emerald crabs, chiton snails and lg astrea snails will aid with control