Indoor seaweed late in the growth cycle

[late]

I use Alaska brand liquid kelp, if that matters. I get the impression most don't use seaweed near the end of the plant's life.
I do. But I was wondering if it was a good idea. Slows down the leaves getting yellow, but is that all?

 

[namvet25]

Whats the npk numbers of the kelp?

 

[late]

0.13 0.0 0.60

I am using General Organics Bloom, Bud and Cal/Mag
the Bloom is a 2 4 4 and the Bloom is 0.5 0.1 1.0

I am having problems with heat stress so I am giving it about 24-30 oz of water a day with a 1/4 to 1/2 tsp of each nute. If it's a larger amount one day, I try to go easy next time around.