New Biodenitrator

[Delphinus]

So I got to the point where I was on the phone to my LFS, asking them to bring in some LSM, and again, the topic came up.. "You realize there's a risk of H2S right?" Aaannnnnd..... arrrrrggggh, there we go, once again, I thought I had made a decision and was going to follow through on it, and here I am, second guessing myself all over again.

Here's my thought ... when I was a summer student I had it absolutely drilled into me how bad H2S is. You can smell it at 1ppm, at 10ppm you can only be exposed safely for 10 minutes at a time (I forget how long you have to wait in between) and I think it's instant-loss-of-consciousness at 100 ppm (it may not be 100ppm, I don't remember. At some point though, you can be dropped instantly with one breath).

Soooooo ... seriously, what are people's thoughts on this? I've even posted this question in Randy Holmes-Farley's forum on RC (although he's not online this week). Keep the tank area well-ventilated?

I may be overly paranoid but one thing I remember is that H2S is heavier than air, meaning anyone closer to the ground is at higher risk (think: pets and small children). Although I need to reduce my nitrates I can't do it if I'm risking the wellbeing of family and pets (or the tank itself).

Maybe Zeovit's the way to go after all ... I don't know ... argh, there I go, second-guessing myself again.