[bitexploder]

No concerns with heavy metals and algae sourcing? Supplements tend to concentrate whatever is in the environment they were harvested from. It always feels like a struggle to find reputable supplement providers. I have settled on Thorne for most things.

[SamBam]

You're going to get far less heavy metals in algae than in fish. Supplements may concentrate things, but with fish you're adding concentration on top of concentration.