Salty Shrimp--GH or GH/KH+
I've been researching for about 3 hours now trying to figure out which one I should go with. I'm wanting caradina shrimp, which would lean toward the GH+, but I plan on running CO2 as well and I'm using BDBS. Everything I've found about running CO2 with Salty Shrimp, the person also has buffering substrate so they're recommended to get the GH+. If they have inert substrate, they don't seem to use CO2 in entities I've found discussing the topic.
Would using CO2 make it necessary to have the GH/KH+ to prevent things swinging too wildly when the CO2 turns on and off, or would the GH+ be fine? Or should I get the GH+ and get a separate KH boost so I can keep the KH lower than the mix would give me?
I feel like I understand just enough to get myself in trouble...