I see there are a lot of sub cats' springing up in other pet cats'... but none as yet under fish
home garden / pets / fish...
I realise there are few sellers in this cat yet... but perhaps to make life easier for buyers I would suggest the following as basic ... the aquatic world is pretty complex, but even a few breakdowns would help :-)
Suggestions for basic sub cats in this arena...
tanks / hoods / stands
foods
treatments / additives
lighting
heating
filtration
other electrical
Misc
Plants and plant care
Test kits