After 6 months dealing with ostreopsis and amphidinium, here are my findings:
- Some dinos are almost always in our tanks, they just don't thrive (amphidinum). Others are caught.
- They can be easily triggered by a drop in PO4, specially when rapid.
- The best way to deal and get rid of them is competition. Foster other forms of life, specially algae that needs some PO4 to thrive. If you are lucky you can get other kind of dinoflagellates like oxyhrris marina and beat them very fast.
- Some kind of them form cysts and therefore are really difficult to get rid of. They can disappear for months and suddenly show up again if conditions are favorable.
- Stong flows help them spread and make the problem worse.
- Nutrient depletion slow them down but won't help on the long run. It is better to foul the water slowly increasing feedings and stopping waterchanges, this is food for dinos, but also for competitors that eventually will suffocate them.
As an example of this I am succesfully getting rid of ostreopsis by dosing large amounts of phytoplankton. No algae at all and water is pristine; NO3 and PO4 are still undetectable but high enough to permit other forms of life like copepods, worms, amphipods...
Thanks for posting this Montireef! I'm not able to read this entire thread right now so your summary (and others the past few pages) have helped.
I've been battling Dinos for years. Completely broke down my last setup (220g) to start fresh. Bleached, acid washed the tank, same for for live rock, brand new deep sand bed. 7 months with a new tank and they are back! I have a very small bioload - 5 small chromis. Tank has been doing great until the sudden outbreak.
I'm hoping b/c my tank is still fairly new with only 5 small fish and two simple corals I can salvage and put up a real fight for once. I've battled so many down in this hobby and nothing has ever broken me. However, this may finally be enough to make me quit once and for all.
Some questions for the forum:
- I do have a simple microscope at home, is there a page in this thread that can help me ID what I have?
- i might be better off than others stopping water changes since my bioload is so small? funny since i've been on a mad water change run the past week or so.
- i have a bunch of filter socks so will run them
- should i turn off the skimmer too?
- while less/lower lighting isnt a cure, will it help speed up the recovery?
- what about adding more fish for the bioload? that kind of scares me.