I currently have 4 platys, 4 guppies, 2 angelfish and 6 neon tetras. Someone has said they want to buy me some more fish for xmas but i dont know what to get. My nitrate, nitrite and ammonia levels are all 0 and have stayed that way. I eventually want to add some discus but my tap water Ph is 8.0 so I am going to start doing my water changes with RO water to bring it down a bit. What could i add in the meantime that will go with what i've got now and be ok with the discus in the future? Cheers guys
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