Air is added back to water where Loach is housed? (7)
I believe the answer is:
aquaria
'loach is housed?' is the definition.
I can't judge whether this definition defines the answer.
'air is added back to water' is the wordplay.
'is added' becomes 'au' (I can't explain this - if you can you should believe this answer much more).
'back' is a reversal indicator.
'to' means one lot of letters go next to another (I've seen this in other clues).
'water' becomes 'aq'.
'air'+'au'='airau'
'airau' in reverse letter order is 'uaria'.
'uaria' after 'aq' is 'AQUARIA'.
'where' is the link.
Can you help me to learn more?
(Other definitions for aquaria that I've seen before include "Transparent fish tanks" , "display tanks" , "Tanks or buildings for fish" .)