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What kind of shrimp are you keeping? If it's cherry shrimp, they really don't care what you put them in (I've got a thriving colony in water with a pH of 8.7, for instance.) Other shrimp, like some of the sulawesi species and ghost shrimp, actually prefer basic conditions.
Are you running CO2 in the tank? If not, a low KH isn't a big deal, if so, you might want to add a bit of baking soda to try to get the KH up to 2 or 3. The hardness should be fine.
Generally speaking, a stable environment is preferable to one that changes for a shrimp tank. I adjust the parameters of the new water before it gets to the tank to try to reduce the swings that a water change inevitably causes. Does it make any difference to the shrimp? I dunno, honestly.
Shouldn't need prime unless you're really stirring up some gunk in the bottom of the tank when you do a water change. That can cause an ammonia spike, which prime can help with, but otherwise it's wasted money. I don't use it at all, personally, and haven't had problems.
Are you running CO2 in the tank? If not, a low KH isn't a big deal, if so, you might want to add a bit of baking soda to try to get the KH up to 2 or 3. The hardness should be fine.
Generally speaking, a stable environment is preferable to one that changes for a shrimp tank. I adjust the parameters of the new water before it gets to the tank to try to reduce the swings that a water change inevitably causes. Does it make any difference to the shrimp? I dunno, honestly.
Shouldn't need prime unless you're really stirring up some gunk in the bottom of the tank when you do a water change. That can cause an ammonia spike, which prime can help with, but otherwise it's wasted money. I don't use it at all, personally, and haven't had problems.