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I mean exactly what I and everyone else meant. It's more than you currently need. There is already enough CO2 in the water before CO2 injection. If you're getting plants that need it, then fine, but with just anacharis it's unnecessary.

If everything else is fine, it won't die... it just won't grow the way you probably intended. Most people use baby tears as a carpet. VERY little carpets decently without a high-tech setup. This probably contributes to why most shrimp tanks don't have carpets. I assure you, it'll grow... it's practically a weed in my tank. I started with a tiny bit that was a hitch-hiker on some other plants. In 1 month, it grew to 10x that much and was shading the stuff around it. It's rather leggy and kinda goofy looking because I'd never intended to have it at all.

All live plants "require" CO2, but I think what Jayc meant is that at the density and with the types of plants you have in the tank, additional CO2 is not necessary. If there's not much photosynthesis going on, your plants will die - basically starve to death. Some of my shrimp tanks have DIY CO2, but they also have a much higher density of plants than yours. It's always a balancing act - putting in the right amounts of all the ingredients needed to make your mini-ecosystem function.

In daylight without the eye shine... what a beauty! I think this is the same shrimp as in the first post above. She's released the larvae and been re-fertilised or was still packing sperm from before (I think shrimp do that) and the saddle has become another batch of eggs. You can also notice she has not eaten (head and gut is clear)...hopefully not a problem. I'm assuming for now that after a shrimp moults it doesnt eat for a while until all the "eating bits" have hardened up... at least that seems logical to me. Compare to the shrimp below.(terrible photo sorry!). This one below has the clear body and white eggs also and I think that brown smudge at the back of the head is the stomach and you can see the "poo chute". If not eating I expect it would be pretty like the one above - its something I'll watch for! Nature is cool.