What's up, homies?!? Again party in the hut or what..?!?
The excitation threshold seems low these days ... Must be due to the weather!
Still didn't get answer for precise timer, anyone?
I recommend you to order a 5$ Sonoff timer. They are wireless controlled by an app called ewelink. The only thing they need is a router for internet access and a smartphone/tablet or other mobile running the app. It has a 10A relay built-in and minute-precise timers, loop timers, schedules and so on. Perfect for pumps and other things with short on cycles!
You can also pair several Sonoff's so they switch at the same time and a few other things like share settings. I currently use them in both of my lamps and they work well so far(around 4 month now). However, the good thing about them is that they keep their programming also without Internet connection.
You can get Sonoff's in lot's of different variations from single, dual to quad channels, with temp/humidity display and abillity to control fans, AC's or heaters. Even as Sonoff POW which among other things measures your power consumption.
https://www.itead.cc/sonoff-wifi-wireless-switch.html
To get enough light from 4 diodes I would use a small 6-12 driver with 300 or 600mA. (3 or 6w)
Because it's not easy to find a good one so small I've decided to use at least 6 Cree XP-E far-red diodes( for ~12v) and a cheap 5w generic e3ay driver with 10-18v/300mA.(1,50$, for 5x 1w).
These cheap thingys are of course not comparable to Meanwell drivers in terms of durability and effiency, but I hope he lasts a while, since I use only 60% of its capabillities. So either he holds longer or if not ..... I bought already three, lol!
Effiency does not matter so much in the 5-10w range we are talking about and the quantity of far red light can be easily controlled by the length of radiation cycles.
The thing which matters most IMO, is a good spread so that all plants received the same amount of light.
But's that's easily doable for a small squared area like yours.
I hope the minds have calmed down again and that answers your questions.
@Aolelon
He seems to be a little blockhead, but basically he's not a bad guy! Just a little bit too sensitive ...
But that's nothing that could not be cured with some sex and drugs ...