Dinos again

[Velcro]

Sorry for the poor video quality. I honestly thought this was diatoms since it seems to have started after I started vacuuming my sandbed with water changes. I've had ostreopsis before and this really doesn't seem like that... not strings, minimal bubbles, goes away very easily with flow. Completely leaves sandbed and rocks at night.

Hooked the UV back up so I guess we'll see!

 

[vetteguy53081]

Do not stop uv after they’re gone. Run unit 12 hours at night
These look like amphidium and you will battle the same way as you did osteo

 

[Just John]

I agree with Vetteguy. If they are amphidium, I would guess the large cell variety based on the speed they move, but this document should help. If you have diatoms mixed in there, you can compare the size to diatoms and get an estimate of how large they are. I have done that and it worked well/was accurate. Here is what I had. You can see the diatom in there. I determined that these were small cell amphidium. The document is below too.

 

[Just John]

Also, this is not a standard method, but I filled the open spaces with filter floss and rinsed it out in the evenings. The idea is that they stick to the filter floss instead of the sand. Just something to think about.

 

[Velcro]

amphidium makes a lot of sense. I think I lost a lot of spaghetti worms when I started vacuuming. I am guessing they were keeping them at bay. I think I’m just gonna run uv, stop vacuuming and watch and wait. Coral looks happy

 

[Just John]

Hopefully it is not the large cell, because at least according to that document UV doesn't work well on that.

 

[GarrettT]

amphidium makes a lot of sense. I think I lost a lot of spaghetti worms when I started vacuuming. I am guessing they were keeping them at bay. I think I’m just gonna run uv, stop vacuuming and watch and wait. Coral looks happy

Hope for best... Im dealing with small and large cell. I've tried both vacuuming and non-vacuuming. IME not vacuuming made it worse. Removing and putting back in tank helped somewhat. My dinos wouldn't separate from the sand when I tried to vacuum. Currently dosing silicate for diatoms, but likely going to remove the sand and treat in isolation.

 

[Velcro]

If I didn’t have two leopard wrasses I would simply remove the sand bed

 

[Velcro]

Definitely appears to be both large and small amphidinium species. The larges are in the sand. The small is on very short strands on the rocks. Coral seems to be unaffected.

There's some sort of situation with worms going on under the scope:

 

[Velcro]

Let the diatom bloom begin.