10g help plz.....

hey sorry to bring this up again

hey sorry to bring this up again, and sorry for dissapearing for a long time without saying thnx too. Ive been haveing some trouble :pc: yea so i brought this up because this week i plan on getting a male betta for my 12g, and i was going to have him alone for a few weeks then add a couple adfs to his tank to see how he reacts to tankmates. Then i was planning on if he was curious but didnt show any signs agression towards them getting 4-5 harlequin rosbaros. I was wondering if anyone has had success or not with harles and bettas.
so if anyone has anything they would like to share about this any help would be really appreciated. Oh and another thing is my water is really hard and like a stable ph of 8.4 everything else is perfect though so i was wondering if i have to do anything to and what to use to do it or is it ok for bettas and harles (if i get harles chances are ill just have the betta in there)
thnx
 
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