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Those look like some big fat healthy Opae ula you have there! Great photos.

The green surface film also seems to have thinned out over the last few days.

I feed spirulina every 2 days or so because of the quantity of shrimp and i have a constant 'dust/dirt' floating on my water so i wouldn't worry about yours.

I have not fed for over a month now because of the nitrite/nitrate problems. However, I may try feeding again next week (when I next access the tank) since the parameters seem to have stabilised.

Here are more pics from the weekend:




There were quite a few shed skins then. I think the shrimp shed when more water is added.

Latest picture:


I noticed while cleaning the front glass that some gunk had build up at the bottom. When the magnet got close to the bottom, the water movement stirred it up and spread it into the water column.

Firstly should this be removed, and secondly what is the best way to do so?

Long straw or a long acrylic tube with the finger on one end with gravity works.

It's a good thing I added the heater. I have an unheated 1L freshwater tub in the same room with only java moss, blanketweed and Anubias. Decided to put the thermometer and there found out the water temperature was 13 degrees C/55 degrees F. Thankfully, the opae ula tank is at 19 degrees C/66 degrees F, which while not ideal, seems to be within the range that opae ula are okay in.

I decided to move a single frond of java moss from the tub into the opae ula tank, since I have heard it can withstand brackish water pretty well. It seems to have some blanketweed wrapped around it, which I hope won't infest the opae ula tank (hopefully the salinity kills that off). I will give it a few days and see how it does.

That is a good catch with the heater, UK winters can be pretty cold!


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The java moss frond seems to still be alive. Not sure if it will grow, though.