What is the logical next step? --RESOLVED
Hi everyone. This post was made back in January. The issue has been resolved. The problem was that my gH was suddenly too low, and once I added some remineralizer the deaths stopped. I am happy to report I have not had any issues with my shrimp since then.
Dear Planted Tank Forum,
Last November I went on vacation and asked a friend to take care of my shrimp. This was a terrible mistake. I came back to a shrimp holocaust -- they had been overfed, the water was polluted, pH crashed, bacterial bloom -- everything that could have gone wrong pretty much did. I lost about 150 or more S+/SS CRS. It was a sad time.
Immediately after that I got the water back to where it was supposed to be and have kept it as perfectly clean and stable as I could possibly manage. Shrimp continued dying off for several weeks but then the deaths slowed and then stopped. There weren't many left, but it was some. Then all of a sudden, about 10 of them died in the last 24 hours and I have no idea why. Guys, maybe you guys can find out what I am missing and why they have suddenly keeled over.
Here's the stats!!
10 Gal planted tank. It has been running for about 5 years. Contains about 30-50 S+/SS CRS and Malaysian Trumpet Snails.
There have been no changes to the tank recently. The parameters have all been very stable. I have tested morning and night, before and after water changes, and everything is always the same.
I feed them sparingly every other day or so (Hikari Shrimp Cuisine, algae wafers, blanched spinach) and there are plenty of plants to forage on.
I do regular moderate water changes (25-30% every four days or so, average.) I use tap water that I condition with Amquel+.
I don't use any ferts or CO2. I have not added any new products or objects to the tank.
I have a large bubble wand running 24 hours.
The shrimp are all foraging hungrily, doing normal shrimp activities, and molting beautifully. Until they suddenly die for no apparent reason.
This has been an invert-only tank for the last two years. I started off with just a few CRS and they bred like gangbusters. The Great Shrimp Collapse of 2012 wiped out all my adults and all my tiny babies, so now all that remain are primarily juveniles. A few of them have juuuuust reached puberty but have not bred yet. Shrimp Collapse 2: The Shrimpening has affected shrimp of all (remaining) sizes, including at least one sexually mature female, which is particularly annoying.
As far as I can tell, there are only two possible sources for my problems: something wrong with the water, or something wrong with the shrimp.
In terms of tank maintenance, I am doing everything the same way now that I did back when I was having a population explosion. So what changed? Could it be that these shrimp are just too damaged after living a week in horrible conditions while I was on vacation? If so, why live on for a whole 'nother month and then everyone suddenly die at once? What was the trigger, if any?
If it's the water, gosh, maybe something changed with the supply? Maybe there are heavy metals or something when there wasn't before? I bought a TDS meter on the internet and it should be here tomorrow. What should I look for? What are some other things I can test, and would that even be helpful at this point?
My partner suggests that I buy some CBS of the same grade and throw them in to see if they live. Obviously if they die then it's the water, right? But this seems like an irresponsible way of testing water quality. I dunno.
What would you do in this situation?
Last edited by rah-bop; 06-24-2013 at 12:40 AM.