First ICP test results question?

[juiceguy]

I ran my first ICP test, results were pretty much on the same level as my Salifert and Hanna kits but ALU is way up and I have no idea where it came from. ATI checks the RO sample as well and nothing out of the ordinary. I do not use any GFO, the only filtration I am using is the Red Sea reef mat, carbon in a Geo reactor, Bio-Pellets in a Bashsea reactor and an Ice Cap UV. I use a Simplicity pump to feed all the reactors and UV. Main pump is an EcoTech L2.
Any insight would be appreciated!

 

[TheBear78]

Did you start with live rock? My initial thought was that maybe any used rock/substrate could have absorbed a little aluminium in the past.

 

[juiceguy]

Did you start with live rock? My initial thought was that maybe any used rock/substrate could have absorbed a little aluminium in the past.

I started with mostly dry rock, I added live rock from LFS, which was most likely Carib Sea rock and added some live Aussie rock when it was available. Substrate is Carib Sea reef sand. I don't see anything reacting negatively so I wonder if it a cause for concern.