Resolved not valid housing?

[gamingcookie]

i'm building an underwater town from bubble blocks in the ocean
this is what the house in question looks like (i know it looks bad i'm not a builder ok)

according to the wiki "this is not valid housing" means that there's corruption nearby, but i don't think there could be any here since i have barely played on the world. and even if there were, there shouldn't be now since i used the clentaminator in a full circle around it with green solution. the house detects evil in a 45 block radius apparently and the clentaminator's radius is bigger than that soo

 

[ppowersteef]

Looks like there's no solid block available.

NPC's needs at least one solid block to stand on at night.

I also have doubts if bubble wall counts as proper walls though.

 

[gamingcookie]

Looks like there's no solid block available.

NPC's needs at least one solid block to stand on at night.

I also have doubts if bubble wall counts as proper walls though.

oh i thought platforms counted for solid block but i guess not, placing a solid block fixed it, thanks ^^