Diatom or Dino

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Okay so I need this identified as I've tried EVERYTHING to solve it and now I'm thinking that I'm trying to solve the wrong type of algae. My tank is around 6 months old but this brown stuff disappeared after I ran rowaphos in a fluid reactor for 2 weeks. My tank then went fallow for 6 weeks with no algae appearing and then as soon as I put the fish in, It came back!
I dont want to use a fluid reactor again as I've converted it into an algae reactor.

Initially I thought it was diatoms so i:
Dosed nopox
Dosed rowaphos
Dosed phosguard
Set up and chaeto reactor.
Reduced the white light intensity and run time to 10% @ 6 hours.
Changed where I bought RODI (0TDS claimed but not tested)

My parameters are
PH 8.0
Nitrate 0
Calcium 300
Phosphate 0
KH 9
Salinity 1.024

Please someone help me!
If its diatoms I'll be relieved but still need to find out why it wont jog on! Or if its dino it would explain why I cant solve it but need advice on how to approach getting it gone.

HK_Fuey

  • Graeme
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Reply #1

Looks like diatoms to me. Have you tested for silicates? Could be getting in via RODI (common for silicates to slip through).
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HK_Fuey

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Reply #2

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ajm83

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Reply #3

It does like like diatoms however my dinos also started off like that.  Get a cheap 25/100/1000x microscope from amazon and have a look.

What's really jumping out at me is phosphate and nitrate being zero.  Aim for 2-5 nitrate and 0.03 phosphate.  They can be too low and this is known to trigger dinos.


edit: pic of the early stages,  ignore the bobbit worm  :D

it eventually progressed to this:
Last Edit: Jan 16, 2020 7:48:33 pm by ajm83

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