Matt - the shrimp tank had Unipac silica sand but it wasn't thick enough having lost some tiny bit by tiny bit over the years. But in the shed I had a small amount of the sand that's in the main tank so I added that. I know it'll end up with a layer of the finer grained sand in the bottom and the larger grained silica sand on the top so I didn't mix it in as well as I should have

I was also afraid of trapping newly hatched shrimps if it did any more vigorous that a gentle stir.
The schismatoglottis is new so I'll have to wait and see how it does. It arrived as one big clump; I split it into a few smaller clumps, some in the shrimp tank and some in the main tank. There are a couple of new leaves beginning to show in the shrimp tank though I did disturb the clumps in the main tank. It's an experiment as I've never really used plants which are rooted in the substrate.
I know that at least one of the kribs will have to be moved on. They could be all male, all female, 1m + 2f or 2m + 1f. Despite the chap being certain they were 1m and 2f they are far too young to tell.
I had also read about them being algae eaters but the way they hunted down the shrimps I had missed makes it obvious they like crustaceans as well. 'Little' has also taken to picking at the edges of the nerite snails

The female rice have only been that colour for a few days. I bought 15 of them 4 years ago and discovered 18 in the bag. I also had 4 fry hatch in the betta tank after I moved a bit of water sprite in there (he was the betta who ignored everything and the fry grew big enough to move into the main tank). For the last year, the rice fish have been dying one by one - males seem to die faster than females. The last male died just over a week ago, leaving these 5 females. The males were pale metallic blue, about the same colour as dwarf neon rainbowfish. The females were pale yellow. The male died on Thursday, I got the kribs last Sunday, then redid the tank on Tuesday which left it very cloudy. On Wednedsay, when I could finally see the fish, the female rice fish were that gorgeous bright gold.
What made them brighten in colour? The death of the male? The kribs ('big' does chase them)? Or me messing about in the tank?
The pieces of azalea root are still soaking. They sank quite quickly, I was surprised. The water turned brown and there was a layer of oily stuff on the surface after a couple of days, so I changed the water, which then started to go cloudy. It is still cloudy after a couple more water changes.There is no sign of that translucent mould but there's no way it's going in the tank till the water stops going cloudy.
The one reference I've found to azalea wood harming fish is a thread started in 2016 when the poster put new azalea root in the tank without soaking and next day the water was cloudy and the fish gasping at the surface. A reply in the same thread earlier this year said their azalea root killed a hillstream loach and left the rest of the fish gasping.
The oily residue on the surface when I first soaked the wood could probably have prevented gas exchange causing the fish to gasp at the surface. But i don't like the cloudy water, it'll have to stop doing that before I risk it anywhere near my fish
