[Chaiwatuk]

All, recently my brackish water chaeto has not been doing well and my tank still suffering from periodic diatom blooms. The chaeto has been doing less well since hot summer period. Any suggestion to revive the chaeto? Should I use fertilisers? And if I should, what variety?

Btw water is good and my shrimps continue to be berried every 2 months or so. I have about 20+ shrimps now in a 20 litres tank. Shrimps are feeding well on diatoms and algaes and I drop few toothpicks of spirulina every few weeks.



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[Vorteil]

Water quality can be good but your macro algae is definitely lacking nutrients. Think of it as a plant. Are you still feeding your opae? Either way the current population is not able to support it? You can use fertilizer to boost it but there's a lot to take into consideration. Where are you located?

[Chaiwatuk]

Hi. I am located in the UK. London. My guess is the same. Not enough nutrients for the chaeto.

I am feeding with few toothpick pinches of spirulina once every 3 weeks.

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[Vorteil]

That's just not enough. I wouldn't focus on the chaeto and just remove some of it. The rest will recover. The opae seem to be doing well for you so I wouldn't mess with the water chemistry. I would also discontinue feeding. There's more than enough in there for the opae to thrive. Continual feeding can throw off the waters parameters if you're not running any filtration.

[Chaiwatuk]

Thanks! Will try this approach and see how it goes.


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