Well that certainly looks like the catappa leaves I've seen at aquarium markets/shops here -- except yeah they're always already dried out -- I personally don't know whether it's ok or not to use green leaves, so anyway good that you're drying them, as you say won't take long.I always assumed the brown leaves are just dried up greens ?. I'll leave it in the sun tomorrow. The mauritian summer sun should take care of it in a day or two
It surely is quite common here, but I'm time challenged enough as it is, so use this for convenience and again I don't want tinted/brown water all the time. And then when my fish has any issue (like recently BBXB jumping and getting a gash on tank bracing), using this is likely faster acting than putting in leaves and waiting for them to decompose. My fish have always recovered from such injuries quite quickly using this method; not 100% it's due to the aid of this solution, but I highly suspect so (the sodium and calcium chlorides possibly help as well).but... Thailand?
I'd expect it to be all over the place, every condo or hotel's landscaped garden, no?
Current leaves are lasting maybe a fortnight, leaving the veining (stock incl. snails/MTS, RTS, goby & pleco).
Far less tannin/water stain than I remember, maybe a seasonal thing or bad memory.