I won against Prorocentrum Dinos, here is how.

Pseudodiego

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Hi everyone.

Been battling Dinos for a few months and I have finally decimated them. So I wanted to share what I did in case anyone find this information useful.

The thank is a 75 gallon. I mostly have soft corals with a few LPS and SPS, I have very high nutrients: Nitrate around 50 and phosphate around 1.

The species of dinos was Prorocentrum, I used a microscope to ID it. They appeared after a treatment for Cyano.

So first, here is what I tried that didn't work:

-UV+3 day Blackout: This was a suggested method for Prorocentrum, but it did nothing for me. I tried this two times, and both times the dinos were reduced in number for a few days, but them they came back as strong as ever.

H2O2: I started with this as soon as I confirmed that there were Dinos on the tank. I added 10 ml each night, I used a small dose because I have ornamental shrimps. It did absolutely nothing.

Removing sand: obviously there were less of them because majority were on the sand, but they just continued clinging to the rocks.

Adding bottled bacterias: Same effect as if I was adding water.

No water changes: after five weeks I didn't noticed any difference, so I resumed doing water changes.

What actually worked was a combination of 3 things, no idea if it was just one of those things or all of them together.

1-> Overdosing silicates: I tried adding it before at the recommended dose, but it did absolutely nothing, no signs of diatoms in the microscope, so I started overdosing it at like 5 ml of sodium Silicate daily. There wasn't any ill effect on corals or fish.

2->Adding Vodka as a carbon source: I started adding it at 2 ml daily, as I read that adding a carbon source can work in outcompeting the dinos. I turned the UV off so the new bacteria weren't killed.

3->Adding live rock: It wasn't too much, just a small piece of 1 kg, I started the aquarium with around 40 kg of dead rock.

I added the rock and started dosing the vodka + silicates three weeks ago. 1 week later the Dinos were severely reduced, by week 2 there was not sign of them, so I added the sand back, and at week 3 the sand is still completely spotless. So yeah, I think I can say that I have finally beat them.

Hope this help.
 
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I'm in the same boat right now with Prorocentrum. However I'm to nervous to Carbon dose, as I've never really done my research on it. But I might start ramping up my silicates!
Congrats!
 
Very similar to yours. Sharing what worked for me if helpful for others:
- dosing NeoNitro and NeoPhos to get my nitrate and phosphate levels back up to 10ppm and .01ppm respectively. Levels zeroed out after a round of ReefRx when dealing with GHA problems that led to my dino outbreak.
- a "blackout" that consisted of turning lights off for 3 days and shutting the curtains closed. I did not do a total-cardboard-on-the-sides-of-the-tank-blackout but rather total reduction of any lights on around the tank.
- dosing SpongeExcel silicates to force a diatom bloom
- Ran UV 24x7 but that didn't help for the type of dinos i had
- Turned skimmer off over this timeframe

On the 4th day the diatoms took total control and completely defeated the dinos. I was astonished at the complete difference in how clean the sand & rock work was that morning. whooo hooo!!

As far as lighting goes, i slowly ramped up 10% per day and i'm currently holding at 50% and all corals are happy. Will go from there as needed. GHA has come back little but i will totally take that over dinos any day!
 
How much spongeexcel did you dose? And what water volume were you treating?

I didn't dose spongeexcel, I dosed sodium silicate. I added around 5 ml daily for 300 liters.

Now I'm dosing 25 ml weekly at the sump. No signs of dinos or any ill effect.
 
I didn't dose spongeexcel, I dosed sodium silicate. I added around 5 ml daily for 300 liters.

Now I'm dosing 25 ml weekly at the sump. No signs of dinos or any ill effect.

Where did you source the sodium silicate? Like is there reef safe specific versions?
 
Very similar to yours. Sharing what worked for me if helpful for others:
- dosing NeoNitro and NeoPhos to get my nitrate and phosphate levels back up to 10ppm and .01ppm respectively. Levels zeroed out after a round of ReefRx when dealing with GHA problems that led to my dino outbreak.
- a "blackout" that consisted of turning lights off for 3 days and shutting the curtains closed. I did not do a total-cardboard-on-the-sides-of-the-tank-blackout but rather total reduction of any lights on around the tank.
- dosing SpongeExcel silicates to force a diatom bloom
- Ran UV 24x7 but that didn't help for the type of dinos i had
- Turned skimmer off over this timeframe

On the 4th day the diatoms took total control and completely defeated the dinos. I was astonished at the complete difference in how clean the sand & rock work was that morning. whooo hooo!!

As far as lighting goes, i slowly ramped up 10% per day and i'm currently holding at 50% and all corals are happy. Will go from there as needed. GHA has come back little but i will totally take that over dinos any day!

What size tank do you have and how much of dosing SpongeExcel silicates to force a diatom bloom did you do? Just ordered some myself. Pretty sure I have some Prorocentrum Dinos :(
 
Very similar to yours. Sharing what worked for me if helpful for others:
- dosing NeoNitro and NeoPhos to get my nitrate and phosphate levels back up to 10ppm and .01ppm respectively. Levels zeroed out after a round of ReefRx when dealing with GHA problems that led to my dino outbreak.
- a "blackout" that consisted of turning lights off for 3 days and shutting the curtains closed. I did not do a total-cardboard-on-the-sides-of-the-tank-blackout but rather total reduction of any lights on around the tank.
- dosing SpongeExcel silicates to force a diatom bloom
- Ran UV 24x7 but that didn't help for the type of dinos i had
- Turned skimmer off over this timeframe

On the 4th day the diatoms took total control and completely defeated the dinos. I was astonished at the complete difference in how clean the sand & rock work was that morning. whooo hooo!!

As far as lighting goes, i slowly ramped up 10% per day and i'm currently holding at 50% and all corals are happy. Will go from there as needed. GHA has come back little but i will totally take that over dinos any day!

What size tank do you have and how much of dosing SpongeExcel silicates to force a diatom bloom did you do? Just ordered some myself. Pretty sure I have some Prorocentrum Dinos :(
Randy explains a lot (including DIY silica dosing) here: https://reefs.com/magazine/silica-in-reef-aquariums/
 
What size tank do you have and how much of dosing SpongeExcel silicates to force a diatom bloom did you do? Just ordered some myself. Pretty sure I have some Prorocentrum Dinos :(
At the time I had an IM 112 EXT lagoon. I forget the exact ml dosage but I did follow the guidelines on the bottle which ended up working out. I upgraded to an IM 200 EXT and currently dealing with a GHA outbreak but I definitely will not go with ReefRx this time around and will go with my DIY algae scrubber.
 

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