Dinoflagellates

PH has been at over 8.5 for 4 days. Im running the lights full for the first time in 4 days also. The Dinos are coming back. I might try a water change.
 
I beat mine with old fashioned elbow grease, and persistance. My plan of attack went as followed:

1. Run filter socks while scrubbing all rock surfaces with a toothbrush. Try to get as much of it up in suspension for the socks to catch it.

2. Scrape glass for reason above ^^^. Once the glass is scraped, some may have settled back on your rock. Blast this back into suspension with turkey baster (this step can be repeated a few times).

3. Do a normal water change while siphoning the dino's off of your sand.

4. Remove filter socks the next morning.

5. Repeat in 3 or 4 days.

I did this for about a week and a half, with the dino's coming back less and less each time. Dont be discouraged, they will come back amazingly fast the first couple of times. I think persistant manual removal is the most effective method to getting rid of these suckers.
 
I gave up on the high PH thing. My PH has been well over 8.5 for some time now. I took 75% of my rocks out to cook. I have other rock that is cured. I am not sure whether to do a huge water change and put it in or just go with the minimal rock for now.
 
I did a 40% water change yesterday and another today. Also took 2 more piece of rock out and put 2 cured pieces in. I'm hoping it does not come back.
 
I gave up. I ordered 100lbs of Totoka rock. The rocks I have now must have something in them. I bought them from someone tearing down their tank. My tank is packed with acros and other SPS. I have a 38 gallon quarantine I might try to move everything to. Not sure if I should try to cure the new rock seperate first or put everything in the quarantine with the existing rock for a few weeks and put the new rock in the DT to cycle.
 
I've been fighting dino's and cyano for about 3 months now - ever since my tank temp spiked in Aug while I was away.

Anyhow - I've tried most of the suggestions people have had.

The syphon, scrape, blast with turkey baster followed by 4-day blackout cycle seemed to work best. The dino's would always be back within 2 days with no appreciable reduction. I tried this for 3 cycles. I always needed to replace some of the water after syphoning so I guess you could consider it a small water change. Some of my sps bleached but is now starting to recover.

I was ready to try the antibiotic route when I decided to dose sugar as one last hail mary attempt.

I have a 75g tank with 33g sump and began dosing 1/2tsp per day for the first week. Then raised it to 1 tsp per day for the second (ending yesderday). The cyano is gone and the dino's are 99% of what they were. I didn't syphon or run any blackout periods during these two weeks. This has seemed to irritate some of my LPS (mainly the candycanes) and some initial bleaching of my SPS (although they are all recovering nicely.

I'm going to slowly bring down the dose over the next two weeks and see if the dino's come back.

Hope this helps someone.

Cheers,

Greg
 
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