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Share photos/videos, journals and logs for your Opae ula tank setups for others to read.
 #7508  by Opaeforms
 30 May 2019 08:17
Hi again, it's been a while.

Both my last setup attempts didn't go very well... dieoffs, hair algae and hiding opae ula. With moving house a while ago, I decided I was going to get rid of my aquarium, and move the 4 opae ula I had left into a 3 litre vase on a windowsill. No heater, light or filter. Just a thermometer so I could keep tabs on the temperature and cover them if I need to. They've been there for just over a year, and they've seemed happier than in all my other setups... but no babies .

I wanted to try and get them breeding so I've now moved them into a massive vase from IKEA with a glass lid. It's about 4/5 times bigger.

The new setup:
- RO water and marine salinity RO water from a fish shop mixed to about 1.010
- some alfagrog from my previous vase to seed the new vase with algae and bacteria
- waited 3 weeks before moving the shrimp in and there was a good amount of algae
- alfagrog superglued together to create a sort of artificial reef with lots tunnels for them to hide

Along with the 4 shrimp I had, I got 10+ more from Odin through ebay for the new vase, and most of them are already red and active. Thanks Odin. Very well packaged and they all survived the journey.

My theory is that they weren't breeding in the old vase either due to lack of space, or because all of the 4 shrimp were the same sex. If either of those are true then hopefully this new setup will give them what they need!
This is my old vase when first set it up
This is my old vase when first set it up
IMG-20180207-WA0002.jpeg (430.21 KiB) Viewed 3633 times
The new vase. Lighting wasn't great this morning so put a light on the top to take the photo
The new vase. Lighting wasn't great this morning so put a light on the top to take the photo
IMG_20190530_063326.jpg (2.35 MiB) Viewed 3633 times
 #7514  by opae ula related
 30 May 2019 15:49
Opaeforms wrote:Thanks both.
opae ula related wrote: 30 May 2019 15:05 Looks nice. One gallon?
It's around 10 litres, which is apparently just over 2.5 US gallons. I think that photo makes it look a bit smaller than it actually is.
Yeah, high probability they will breed in that size. My smaller tanks are 2 gallon and they breed.
 #7515  by Opaeforms
 30 May 2019 15:54
:smile: Awesome, I hope so! Just thought, could another reason they may not be breeding be temperature fluctuations?As I don't have a heater in the tank it can go from 16 degrees to 28 in one day. I wonder what kind of temperature fluctuations they get in the wild and if that has any effect.
 #7516  by odin
 30 May 2019 18:53
I absolutely love this tank! Hope you have some better results this time around... Its all about trying new things when all else fails. It took me a while to get things right for my setups.
 #7577  by Opaeforms
 07 Jun 2019 12:10
Just a few observations. In my last setup I never saw shrimp with such dark innards as in this setup... All the shrimp always have very dark stuff going through their digestive systems. Makes me wonder whether there was enough food in my last tank, or whether the algae is just different in this one and so looks darker once they eat it.

Also, when the shrimp are doing laps around the tank, because it's cylindrical, they can go round and round without any edges to stop them. I notice that 90% of the time, the ones that are doing laps are going clockwise. Almost never anticlockwise. Weird!