10k vs 20k

FindingSalt

New member
Just out of curiousity what is the huge difference in growth between the two. I mean will i get two inches in two months with 10k? Or will i get one inch in two months with 20K. How does it work is it that noticeable?
 
tough to say.
It's not all about light.
water quality plays a pivotal role too.
10K does offer more par though.
 
Re: 10k vs 20k

In a GROSS generalization, that is my understanding as well.

I'm using 10K now, but once my stuff grows out to a good size, I'm gonna switch to 20K for a while.

<a href=showthread.php?s=&postid=6575150#post6575150 target=_blank>Originally posted</a> by FindingSalt
Just out of curiousity what is the huge difference in growth between the two. I mean will i get two inches in two months with 10k? Or will i get one inch in two months with 20K. How does it work is it that noticeable?
 
It's not only the growth that is effected when switching to 20K, but also the color. Just because it is more blue it doesn't mean your SPS will have better color. I found bulbs with higher PAR like 10K's will give better overall color.
 
<a href=showthread.php?s=&postid=6575906#post6575906 target=_blank>Originally posted</a> by Don Berry
It's not only the growth that is effected when switching to 20K, but also the color. Just because it is more blue it doesn't mean your SPS will have better color. I found bulbs with higher PAR like 10K's will give better overall color.

But is it the PAR or the 420nm giving you color? This is not really a fair statement IMO. A lot of people swear by 20K as the key to color. It just takes more watts of 20k to give you the same PAR.
 
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