I want better MH bulbs any ideas

[danbstrong]

If you have cyano you will get negative readings because the cyano will bind the nutrients how old are your bulbs ? i change my mh about every 8-9 months or so

Also cyano thrives in lower flow can you post a pic

 

[danbstrong]

Also cyano thrives in lower flow can you post a pic

But as far as your first ? Goes phoenix 14k de mh i love these bulbs