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Share photos/videos, journals and logs for your Opae ula tank setups for others to read.
 #3521  by Halocaridina
 18 Jul 2017 14:08
Every time I do water tests I get 0 for ammonia, nitrites or nitrates. I think I will get another test kit, because this just does not sound right given how cloudy my aquarium looks (it looks as if it is still cycling). Also, the bottled water I use has 5mg/L nitrate on the side of the bottle, which should show up on the test, but it does not.

I have read this problem could be caused by phosphates or silicates instead of nitrates, in which case I may need to switch to using RO or distilled water.

Also, one of the nerites has been sitting in the same place in the corner of the tank, half below the water surface, half above, for 3 days. I hope it is alright!
Last edited by Halocaridina on 18 Jul 2017 14:22, edited 2 times in total.
 #3523  by opae ula related
 18 Jul 2017 17:00
Regarding the last pic, the front glass is clean and free of algae?
 #3528  by odin
 19 Jul 2017 16:06
With regards the Nitrate liquid tests you need to bang the bottle on a hard surface VERY aggressively as the sediment of the bottle sticks to the bottom of the actual bottle base in bottle #2 (i believe).
 #3542  by Halocaridina
 19 Jul 2017 19:37
opae ula related wrote:Regarding the last pic, the front glass is clean and free of algae?
In that pic there is some algae on the front glass. However, I have removed the algae on the front glass and it is still just as cloudy.
odin wrote:With regards the Nitrate liquid tests you need to bang the bottle on a hard surface VERY aggressively as the sediment of the bottle sticks to the bottom of the actual bottle base in bottle #2 (i believe).
Thanks - I will try that and test again.

Also, the nerite still has not moved its. It still moves its tentacles so I know it is not dead. I'm not sure what's happening.
Last edited by Halocaridina on 19 Jul 2017 19:37, edited 1 time in total.
 #3570  by odin
 25 Jul 2017 20:20
Thanks for the updates, has the snail moved much?
 #3631  by Halocaridina
 02 Aug 2017 22:52
A little but seems to be mostly in the same place. I physically moved it somewhere else in the tank and the next night it was back in that same place.
 #3972  by Halocaridina
 20 Oct 2017 11:47
I have not updated in a while now so I thought I would again.

I was abroad for about six weeks in August up to mid-September, and left the tank alone. The water level dropped substantially during this time, and an algal bloom occurred. My dad topped it up a little thankfully to avoid it getting too bad, but I imagine there was still a pretty substantial hike in salinity (at least 40% of the water had evaporated). Also, the temperature has been dropping lately as summer is over. Because the tank is in an outdoor boiler room that is not strongly insulated (and the boiler turns off at times during the day), there is some fluctuation. I have shifted the aquarium heater up a few degrees to account for this.

This time, the algae was a dark, thick green slime I had not seen before. I looked into cyano on the internet and it does not smell like that. In addition, the snails do eat it unlike cyano, but it seems to grow at too fast a rate for them to clear. I think the drop in water level killed off some of the higher placed chaeto, and this sent nutrients shooting up again. Thankfully, both snails seem to have survived this experience, and most of the shrimp seem to be doing fine, although it is hard to keep count. I saw 5-6 swimming around in the visible part of the tank, but did not check the back where most of them hide. The cloudy water has cleared up substantially. I think the reason for the cloudy water was due to interference with the substrate (killing off bacteria through gravel vacuuming too extensively), so after being left undisturbed, it cleared up naturally. I did another gravel vac but a lot lighter and sucking up a lot less of the substrate, just to clear some of the algae and poop off the top of the substrate.

However, there is some red growth underneath the substrate (can see it through the glass) that could be cyano. I last checked the tank a week ago, and it seemed fairly fine then. I will check again in a few weeks time.
 #4011  by Halocaridina
 12 Nov 2017 12:43
The water cloudiness has now completely disappeared, but the green slime has grown thicker and now coats absolutely everything. I am fairly confident now that it is some sort of freshwater cyano based on what online images of that looks like. The cyano is causing the chaeto to grow into long thin strands as it keep trying to break out of the cyano coating through new growth and then the new growth gets enveloped by the cyano again. The nerites seem to be out eating it constantly but unfortunately not enough to keep it down. As a result, I may add one or two more nerites. I think I will also cut down aquarium lighting to 3-4 hours a day to slow cyano growth.
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