So what’s your plan? Because I can’t think of anything else to try that wasn’t already mentioned aside from nuking the tank and starting over. I would suggest that you immediately add both copepods and phyto, stop doing water changes, leave the sand alone, as soon as you stir up the sand bed they will start to take hold again. Don’t scrape/clean the glass and let the algae on the glass outcompete the dinos. You will also see the copepods starting to eat the algae on the glass, but dinos too. You mentioned (I think) that the dinos poison the pods? I haven’t ever noticed that as a problem, considering the overwhelming numbers of the pods when you add enough. Do all of those things and then get your nutrients up and your problem may go away or at least make it more manageable.
I swear by the Dr Tim’s Dino program though as I tried EVERYTHING and the thing that finally kicked them was Dr Tim’s and everything else that I mentioned.
Hopefully you try all or at least some of this. Usually the suggestions on here are a result of something that worked for us. The trick is, finding what will work for your specific eco system and your specific species of dinos.
Good luck though! You can fix this and you will learn a ton in the process. Just be open to advice if asking for help. I learned quickly in this hobby that there is so much to be learned from other reefer’s mistakes and successes.
Remember, we don’t even know how much we don’t know about this hobby. Listen to those who’ve been in the hobby for many years. Chances are they’ve encountered every pest, algae, parasite, disease, equipment failure, water chemistry issues, and so on. A wealth of knowledge to draw from. That is what I did when I first started and what I continue to do.
I would also encourage you to think through all of the most common issues that can happen in this hobby and do what you can now to take preventative action, or at the very least, have the tools/supplies at the ready and deploy the solution at the first sign of trouble.
Also, it’s important to remember that there is rarely a quick fix for Dinos or any problem we encounter for that matter. Patience is key. Rarely does the problem take over instantly if it is algae or dinos, pests, etc (not talking about toxins, overdoses, equipment failure, all of which can create problems instantly) If it took a few months to get that way, it will probably take a few months or more to fix. Try a solution and stick with it for awhile before changing directions and trying something new. If you see progress, stick with it!
I remember my battle with Dinos. I started a second Tank way back after a year of success with my first tank. The problem was, I started everything to fight high nutrients before my nutrients were even high or even a problem. I started a large refugium, a GFO reactor, and I started using microbacter clean to try and skip the ugly phase.
The result? My ecosystem was not established enough, and there wasn’t enough good bacteria and large enough fauna population to combat anything really at that point, combined with zero nitrates and phosphates and not enough feeding, I had a Dino problem take hold.
I tried everything that I could think of, along with a deep research dive into all the research on dinos and forums of everyone else’s attempts until I found what worked. It was Dr Tim’s Dino program (see link at bottom of post and picture of instructions) which includes dosing “refresh” for two days during a two day blackout, then when my lights came back on I dosed waste away for the recommended amount of days, as well as following the schedule laid out for water changes. I also added a small UV canister filter- I couldn’t afford a high grade unit so I found a $100 9w UV canister filter and just took out all of the media trays/sponges.
SunSun Hw303B 370GPH Pro Canister Filter Kit with 9-watt UV Sterilizer
I also added pods/phyto. Like ALOT of pods. For a 80 gal system I added 4 jars of Eco Pids and 2 jars of 5280 pods to my refugium and to the DT directly with all of the pumps turned off and at night. Drop the pods in and let them sink for 30 minutes and find a home in the rocks and sand. In a few days you’ll see little white specks on your glass. If you look closely, you can see them running around on your glass eating algae. Don’t scrape the glass though! The phytoplankton doesn’t eat the dinos, but the pods will eat the phyto and the Dino’s! The phyto helps by adding a food source, which increases nutrients. It also helps your system speed up the process of balancing the eco system and outcompeting the Dino’s.
Dino’s are resilient in zero nutrients, but very easily die off or diminish when there is anything else, and I mean ANYTHING else that outcompetes the Dino’s.
****One caution, the “refresh” is no joke and will almost eradicate the problem on it’s own, and the waste away is to clean up the wreckage left behind by the refresh. When the lights come on, you will see the shriveled remains of the god awful dinos (very satisfying to see them die)
But... the refresh can be hard on your inverts in your CUC. I lost a few snails and crabs during that process, but my shrimps were fine.
However, compared to the livestock and coral I had lost to Dino poisoning or smothering/being choked out by the Dino’s, a few dead snails and crabs was an okay price to pay to solve this.
I started to rant there for a moment, but hopefully it helps. And I Hope it works out for you!
Are you ready to beat dinoflagellates? Arm yourself with the right tools to win, and say goodbye to the dinoflagellate scourge! Dr. Tim's treatment regimen, using the bacterial strains within Re-Fresh and Waste Away, forms an important part of the solution to dinoflagellates by creating less...
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-T