- Joined
- Jul 2, 2017
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FWIW: I can't prove this but in the past few months I've lost all but two crabs (hermit and emerald) and all my shrimp (Fire, Scarlet, Peppermint, Pistol) which I think was related. I have one SPS colony that would start to bleach until I did the prescribed water change. After the water change, it would start to recover for a few months but would start to bleach again. Both times it bleached, it appeared to be during the high levels, but who knows with SPS.I don’t think it has to do with the age of the gfo, mine is fresh (unless it’s been sitting in the warehouse) I don’t know how many lbs/tons BRS buys at a time. Yea it would be very hard to pinpoint if you were doing wc’s and had a lot of time between tests but I think your on to something bro!! Iv reaches out to Ryan the owner of BRS to hear his thoughts... I don’t really even know if the high chromium readings are a bad thing... it could be inert or something like Aluminum in the Marine pure ceramic blocks.... hundreds of colonies of SPS are doing great, nice colors healthy and good growth so it might not even be a big deal at all. From my understanding there isn’t much research on the affects of high chromium on marine life. I’m not going to stress too much on it but I want to get this figured out so others that have this problem aren’t chasing heavy metals in their system stressing out like us lol. My thing is that if chromium dissipates so quickly like iron (I’m assuming since they’re in the same FE group) then there would have to be a source directly in the water column or a VERY obvious source outside of the Aquarium, if it was that high due to a foreign metal source then I would think we would see a lot of bad things happening with the animals. Also chromium is in a lot of combinations of metals... why would chromium be the only one to show up?(unless it dissipates slower). Yea bro I think we’re on to something here and heck yea when you break down that system please report back your findings. I’ll keep you guys updated on my future tests. Happy reefing man I’m glad I was directed to this thread makes me feel a little better. It Has to be the HC GFO