Hi Sonny,
Regarding Dynoflagellates. And your excellent advice.
I've had a minimal amount of the darker/ almost black algae which has been escalating over the last few months. I hardly feed. But there is obviously another source that is spurring this on. I did monthly waterchanges and sometimes bi-monthly.
It was starting to get out of hand. I skipped on my usual use of Po4 remover and carbon when I started this tank.
It was a standard monthly maintenance thing I did on my old system. Which also had a slight Dyno problem. That was small patches of pink/red slime and some cyano in parts. Although I had a lot of coraline algae due to my high Calcium levels which were close to 500 but battled with KH demand.
Anyhoo, I read your article on Dyno's in your tank and read through the article on reefkeeping.com.
Since last week Sunday, I started bacteria dosing about 20ml a day on my 80Gal system. Using Seachem Stability. They haven't started stocking MK7 yet..bad bad LFS. They had nothing else.
I started Wet skimming and have been monitoring my SG. Which fluctuates btw 1.025 - 1.026. Which I rectify with smaller waterchanges....oh, and I've been syphoning my sand. I end up loosing some of it in the process though.
And my God the skimmate smells something aweful, not a normal smell for my skimmate....perhaps it's the addition of phosphate remover. I'm not sure.
I bought a bottle of Brightwell's PhosphatE Remover(liquid solution) all the stores were out of Seachem Phosguard.
I put a large bag of Carbon into my sump and a powerhead.
I replaced my T5's:
AM Blue Plus
AM Blue PLus
AM 10,000K
AM Blue plus
KZ Figi-Purple
AM Blue Plus
Not a great selection yet but I'm getting there and they are all new tubes. Marked the date and I'll change them again around Christmas.
Since then I have got my Ca and KH stable. With a few large doses.
15ml per day of each for 3 weeks. Now I dose 10ml's of each per day.
Ca - 400
KH - 8
I tested my PH which I haven't since I set up this tank. (I know, I know - most of us are guilty of this)
Recently I've been testing like crazy, monitoring daily for everything I can. And logging everything in daily journal. Which helps
My PH was sitting at a low 8.0 (oops)
2 days ago I started my first dosing 5ml(teaspoon) of Kalkwasser to raise the PH. Dropped my photoperiod by 2 hours. So I now have about 8 hours of light a day. But I started with a full blackout for 24hours or so.
after day 1 of Kalk - raised to 8.3
I dosed 5ml again yesterday. I will check PH again this evening to see where I am at now. But this morning I have noticed that most of the black algae has disappeared.
and still skimming heavily. Increased my flow to 14500g/h.
So - safe to say your advise is paying off. But only through diligence.
Thanks