I went ahead and gave away (with proper disclaimers) all the substrate and plants in the guppy tank then just rinsed with hot water and let any decor I wanted to keep dry for a few days between transport and set up. Haven’t seen a mini ramshorn in there since.
I still see one every few days in my shrimp tank so I know they’re still in there, but none of the other tanks have them now.
I lost one bamboo shrimp when I moved the tanks (a couple days later, so most likely related, but that’s it. I’m going to call that a win because I was expecting them to struggle with the huge water change, even though I added the new water slowly.
I actually thought I was losing more and they were just being eaten because I was seeing fewer shrimp in the tank. Then I replaced my HOB
filter with a nano canister. The intake was covered but I guess they were climbing into the outflow because a dozen shrimp were ‘rescued’ from the filter media basket.
My bamboo shrimp aren’t happy with me about the loss of the HOB
because the flow is quite a bit lower with the little nano canister. And I keep moving the outflow so they have to find a new spot. Sorry guys, lol. But this tank is right next to my bed and I was done with waterfall noises at night!