Diatom bloom? What's next?

deron_d

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Hi all,

Started small aquarium about a month ago. Build details:

Fluval Evo V
Newa 606 pump
RFG on return
Intank with Floss, Chemipure Blue, Matrix
Carbisea Life Rock
Caribsea Live Sand
Stock light

I cycled with Dr. Tims products.

In two weeks readings for ammonia, nitrate, nitrite were all 0 and I was able to add ammonia and watch it process in 24 hours.

At that time I assumed good to go and added:

Juvenile clown
Juvenile royal gramma

A week later, with readings for ammonia, nitrite at 0 and nitrate < 5 PPM, I added some CUC to try to assist with any waste issues.

2 blue legged hermits
1 dwarf trochus
2 nassarius

Things have been going well until last few days as I've started to see I guess a brown algae diatom bloom and collection of green algae.

Params all check out with 0 ammonia, 0 nitrite, nitrates very low.

Should I add to the CUC to help clean up this algae that's sprouting? I was thinking to keep nassarius about where it's at, double the hermit crew and maybe increase to 4 trochus or so.

One thing I've done is sort of mix up / turn the substrate. Also directed my return to point towards it so that it's getting some movement of the sand (not blowing all around, but some movement). Not sure if that's all good or bad.

I've been running the lights quite a bit. I'd say 12 hours a day or so. Was thinking to scale back dramatically or go dark for a time.

I've been doing 25% water changes each week. RODI. Salinity is sitting at 1.0025.

Goals for future would be to add some softies, maybe some frogspawn later down the road. Perhaps add a cleaner shrimp and as mentioned expand CUC if needed. Planning to get a 32g Biocube as these fish get bigger and transition them there. Hoped to stay on top of water changes, etc. between now and then. So far numbers look okay but seeing this algae has me concerned (even though I know deep down just the uglies).

Any other advice for dealing with the algae situation would be helpful.

IMG_0953.jpeg IMG_0954.jpeg
 
This looks very similar to how mine was and you've take a similar approach.
I added a small CUC soon after cycling and there was a typical diatom bloom shortly after that. It never really got any worse than a brown dusting on the substrate but would return a day or so after siphoning during bi-weekly water changes.
Mine also had patches of green, especially on the glass under the substrate.
I was keen to let it take its course with the CUC that I had and now I'm through that particular stage I'm glad that I didn't get too big a crew. They wouldn't have much to eat now!
I would recommend sitting it out as it doesn't appear too bad at all. It will eventually go just make sure your nitrate and phosphate doesn't bottom out. Mine did and I started to see Dino's until additional fish were able to pick the nutrients back up. Everything cleaned up really quickly after that.
 
This looks very similar to how mine was and you've take a similar approach.
I added a small CUC soon after cycling and there was a typical diatom bloom shortly after that. It never really got any worse than a brown dusting on the substrate but would return a day or so after siphoning during bi-weekly water changes.
Mine also had patches of green, especially on the glass under the substrate.
I was keen to let it take its course with the CUC that I had and now I'm through that particular stage I'm glad that I didn't get too big a crew. They wouldn't have much to eat now!
I would recommend sitting it out as it doesn't appear too bad at all. It will eventually go just make sure your nitrate and phosphate doesn't bottom out. Mine did and I started to see Dino's until additional fish were able to pick the nutrients back up. Everything cleaned up really quickly after that.
Sweet, thanks for the quick reply! Ride it out is what I'm hearing!
 
I too have a small juvenile tank and faced the same issues, one of the things I have learnt is to allow the tank to cycle fully, as a newbie it's very difficult to gauge how long the cycling process will take, I took the advice of many which was to let it settle in and don't stress. Another great piece of advice I can offer is to go easy with the lighting early on. Good luck.
 

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