Carbon increasing water tint??

[crav]

My tank's water was looking a litte yellow. Here's the specs:

• 35g tank
• sump: oversized skimmer (rated for 75g), ATS, matrix biomedia
• Very few corals: mushroom, psamocora

I decided to put in carbon and purigen, to reduce water tint. Diy'd a media reactor using a plastic bottle (coke PET bottle).

The problem is: my water got really yellow (beer like when looking through the length of the aquarium) instead of clear. Only thing that changed is the added carbon and purigen. Any ideas on what to do to remedy this?

 

[Brad Miller]

What brand of carbon exactly did you buy ?
Some inferior ones will do this, also post your parameters

 

[crav]

What brand of carbon exactly did you buy ?
Some inferior ones will do this, also post your parameters

I bought Sera carbon (comes in cilinder pellets).
Params are ok, 1.023 sg, 8.2 ph, 7-8 dkh, nitrates about 10ppm.