Finally got round to reflooding this today, ug completely melted away it's been replaced with some micranthemum umbrosum I've also added some ludwigia arcuata in places, the rest of the plants seemed to cope with being kept emersed for a while, also had to go back to an in tank diffuser, I found my jbl reg developed a issue with working pressure above 2bar, gas would purge from the pressure release valve. Pics to follow later.