The water parameters were pre-water change.
The bioload is similar in the two tanks - according to the CC they are 63% stocked in the 125 litre and 66% in the 50 (using real volumes of actual water not the manufacturers' volumes)
I didn't have a pH crash, that was the first test I did.
It was plain flourish, the one with trace elements. I don't use flourish excel very often as that made the leaves fall off the hornwort in the 50 litre (the only tank with hornwort). Though I gave up on the hornwort as leaves kept falling off anyway and making a mess on the sand, it was just a lot worse with flourish excel.
The website I found talking about failed moults and lack of calcium in the shrimp's food recommended kale. I don't know what I'd do with a whole pack of kale, it would last several years at the amount I feed them. But I do have frozen chopped spinach in the freezer. I scraped some off the side of a block. I'll stop using it just in case it was that (and it stops the shrimps absorbing calcium)
Any suggestions for calcium rich food suitable for shrimps? Do they make pellets for shrimps that contain calcium?
I did manage to find a few plants of salvinia that were still green. They are now in a tub of dechlorinated water on the windowsill, there's enough to cover maybe 2 square inches. Everything else was brown.
I've had duckweed die off before, I put it down to my aquatic plant growing skills. But it's the first salvinia problem I've had, and the java fern & anubias are still OK. And my african violets look wonderful now they are in flower
Have we had any very hot weather since Jan 2010 until this last few weeks? Maybe Gaynor is right.....
My knee is fine now. I had knelt on the floor to sort out a drawer and got up awkwardly.
I know what you mean about eye exams, Steve. I was diagnosed with intraoccular hypertension (not glaucoma yet as my sight isn't damaged) earlier this year and with check-ups for that and screening for diabetic retinopathy I regularly have drops in my eyes. It looks as though someone has smeared your glasses with vaseline for several hours. I can see I have fish, but can't tell if they have fins