Originally Posted by PuddlesAqua
Ok, yeah, probably overkill. the lights can be controlled in 2s, so I'll just use 2 of the bulbs. If I have algae problems I'll look into t8s or spot dose with excel. You're saying not to use macro fertilizers, but everywhere I read where people are doing high light, heavily planted tanks they supplement with macros using the EI method. Why do you say different?
Those who dose EI method,and use higher lighting, normally are injecting CO2 .
Excel need's to be dosed each day, to be truly effective and will get expensive for four foot tank which I assume you have, with lighting measurement's you mention (48'').
I run a four foot 80 gal planted tank with T8 bulb's, and once a week dry fertz KNO3,KH2PO4,Trace mineral's (aquariumfertilizer.com Macro Micro package).
Being as how I am not using CO2 supplement's or injection,, I simply add about 1/2 tsp of each once a week, and perform 50 % water change each week or maybe every two week's.
Plant's I have benefit from this, and have seen no negative effect's on fishes,shrimp in over a year now.
No one can tell you what fertz may or may not be needed due to variables such as fish load,plant mass,lighting,CO2 or not,substrate composistion, types of plant's, Source water composistion,ETC.
Best to decide what your goal's are and choose a method that achieve's those goal's.
Trying to utilze bit's of several method's ,often lead's to dissapointment.
Might google(BarrReport.com) and read through some thread's there that interst you if you choose High energy tank with CO2 ,and higher lighting.It is a good source for those considering the High energy approach.
If it is low energy ,more natural approach you wish to achieve then another member here ,Byron has written a very informative three or four part informational how to that work's well for that approach.
Hope some of this help's.