photoperiod for SPS [Archive]

wkada

Sun, 26th Apr 2009, 07:58 PM

What do people run for photoperiod? Just read an interesting thread on RC regarding improved SPS growth and color with reduced photoperiod, like 5-6 hrs MH and 8-9 hrs actinics. I run T5s, 10hr all on, 12hr actinics and it seems my SPS color is a bit muted. Growth is OK. Thinking about cutting back my photoperiod and seeing what happens.

LittleReef

Sun, 26th Apr 2009, 08:06 PM

I've cut back my MH photo period from 7 hours to 5 hours and leaving my actincs on for 10 hours. In the time since I started, I've noticed more growth than usual, and the colors in one of the pieces that has been browned out are coming back at a rapid rate. I highly suggest cutting it back. Worked for me and a bunch of others!

lt1z28

Mon, 27th Apr 2009, 10:39 AM

When I was using the T5's I had my blue plus bulbs on for 12 hours and the daylight bulbs for 8 hrs. Growth was phenomenal with the T5's! My new halides are on 8 hrs a day.

chark

Mon, 27th Apr 2009, 01:14 PM

Running T5's actinic 7 hours all others 5 hours. Good growth and good color.

It1z28 why did you switch from T5 back to MH?

Ping

Mon, 27th Apr 2009, 03:42 PM

6 hours MH, 12 hours VHO

Daniel

Mon, 27th Apr 2009, 05:08 PM

12 hr actinics rest is 10 hours, good color and growth.

g-ray

Mon, 27th Apr 2009, 05:16 PM

t5 tek fixture 6 bulb
10 hr actinic
rest for 8 hours

good growth and tons of color.

lt1z28

Tue, 28th Apr 2009, 01:12 PM

Running T5's actinic 7 hours all others 5 hours. Good growth and good color.

It1z28 why did you switch from T5 back to MH?

I like the natural look of metal halides.