Organic fertilizers

Some of my plants have really started to slow growth and have dead spots on the leaves. I have been looking up organic plant fertilizer are they safe for bioactives ?

Down to Earth Organic Kelp Meal Fertilizer Mix 1-0.1-2, 0.5 lb https://a.co/d/1DKJ7CF

Something similar to this?

The picture of my gecko is just for enjoyment.

Some of my plants have really started to slow growth and have dead spots on the leaves. I have been looking up organic plant fertilizer are they safe for bioactives ?

Down to Earth Organic Kelp Meal Fertilizer Mix 1-0.1-2, 0.5 lb https://a.co/d/1DKJ7CF

Something similar to this?

The picture of my gecko is just for enjoyment.