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- Feb 11, 2019
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Those are great questions and what I can tell you is that even tanks with high iodine eg .09 and running ozone or UV still get RTN and STN from these protozoan parasites so I am not convinced they help but I am open to hear everyone’s experience. There are many people that get RTN even though they run UV.Thank you for the reply. Now, here is another question. Is there any evidence that the parasites can be controlled or made non-malignant once they are present in a system. I bring in wild SPS and LPS frequently and follow a dipping protocol, plus quarantine in a 'dirty' holding system. Now, the dips I currently use (iodine and Revive) may not kill these protozoan so I could have unwittingly spread these parasites into the many client reef aquariums I manage. A little while ago I suffered a critically low iodine incident in my main system which resulted in the rapid near loss of a few colonies of LPS and SPS to an apparent brown jelly infection, followed by their stabilization and recovery once the iodine deficiency was corrected. I suffered another brown jelly event a couple months later that took out a large healthy purple and green lobo as well as a small tenuis colony in a matter of hours. Only change I had made prior to this was I put the ozone generator one a timer to cycle it on and off during the day and had changed one of the two 55W UVs on the system to run only at night. I have since reversed this change and there has been no further brown jelly presence observed in the past few weeks. Could I possibly have been suppressing the protozoa that are certainly in the system by running ozone 24/7 and 110W of UV at a flow rate of about 700gph in a 420gallon total volume system?