Didiplis diandra melted for no reason

[FishSoup]

Hey there guys.. something weird (to me, at least ) happened in my tank... i had redone one of my small 35cm tanks, planting some cryptocoryne pontederiifolia and a single specimen of pogostemon helferi (downoi). There previously were a few stalks of didiplis diandra in the tank too, growing close to where i planted the downoi. They were bright, healthy green.

After planting the downoi, it melted and then, weirdly, a couple of days later, the didplis diandra all started melting as well. they just turned brown and started rotting.

Anyone knows what's going on? Is it some disease i need to control or something?

The tank presently houses a number of 1.5cm large Pelvicachromis pulcher fry. There is no co2 injection, and the crypts all seem to be doing ok.

[Aquaculture]

You have somehow changed the parameter. Give the plants sometime to readapt to the new environment.

[illumbomb]

This is especially so for a nano tank. Just a minor rescaping, additional of new plants or addition of small amount of chemicals can result in major changes in water parameter affecting the fauna and flora therein.

[FishSoup]

Aight... thanks guys... hopefully the two remaining stalks of didiplis diandra manage to survive then...