ask and you shall receive.....
im going off the top of my head here. i used to run these back in the day before i decided to complicate my world with active recirculating hydroponics. now every year i grow i lean more towards simplification and self sustaining, smooth running trouble free systems. now im moving back to half and half or close to. if they can hang with my big commercial system or close enough i will be switching back for the most part.
i once left my grow for almost a week and went to disneyland. i was shitting my pants the whole time thinking i was gonna come back to a room full of death but i came back to a room full of happy healthy plants praying to the light. if your res can hold out long enough or you could automate your top offs with a float valve or dosatron setup this would be the ultimate goal. would save countless hours that you could put back elsewhere into the garden.
the biggest thing with these is the small learning curve. follow in someone elses footsteps and dont just wing it. wont work out well. once they are dialed in they are mostly hands free with a few exceptions. there are limitations to the system. the longer your main manifold line is the higher your res needs to be. for every 10' linear you need 1' of elevation on your res. simple enough. i usually go overkill if possible just to be safe. you can mount a small bucket like mine on a shelf and automate top offs or simply have a BIG reservoir on a home made stand a few feet off the ground. whichever you have the space or resources for. brute trash cans, tuff totes from HD or lowes all work well just size to where you dont have to top off every day or put a float valve/top off system.
the feed line that comes with them is garbage. its stiff and shitty to work with. its like the black 1/4 drip tubing but a little bit thicker. they have a red soft rubber version but its like a dollar a foot which isnt bad if youre doing a small run. im using hydrofarm half inch id tubing and then just using the 3mm barbed fittings poked into that. its pliable and easy to work with, plus you can get a hundred feet for 20$. The brown drip line that actually drips to the plant are short, the ones supplied with the kits. i bought a 100' roll and i make longer lines so i can move my pots a foot or so in any direction.
the little adjuster dials are extremely sensitive. you turn it a little by accident when fucking with your plants and you could potentially cause it to drain your res through that dripper lol. they make protective covers and they are dirt cheap. 2.50 for 25. worth the peace of mind. this brings me to my next point. keep saucers under each individual plant. if you have a dripper that is running away on you it is too hard to figure out which one did it if they are all sitting in runoff and have soaked it up. YOU WILL PROBABLY FLOOD YOUR SHIT A COUPLE TIMES WHILE DIALING IN. it happens. i line all my tents with pond liner now. again cheap peace of mind when youre gardening upstairs lol. if you are careful and follow directions during the dial in it probably wont ever happen but i like to prepare for the worst case. if you have a giant res topping off a smaller one you can regulate the flow with a valve down to a few drops every few seconds as an extra precaution. dont let that scare you off. they are worth the effort for sure.
this link will teach you anything you need to know and its all broken down into nice little downloadable sections.
https://www.sustainablevillage.com/downloadable-instructions
they used quite a few of my old grow pictures in their downloads. i was flattered haha.
cool thing is these things are insanely scale-able. you could do a warehouse with these you would just have to use a booster pump to keep constant pressure in the lines and then you could skip the gravity reservoir. i may go this route in the future as i expand with them.
a few key points
no organics in the lines! if you wanna add kelp or moasses, fulvics, shit like that they HAVE TO BE HAND WATERED. they cause junk in the tiny feed line and they will clog.
drip clean is recommended, i also like to go through and massage the lines to each dripper every few weeks when im bored and make sure there are no clogs forming.
clean chem nutes are a must, good thing is with a constant drip with no runoff you lower you feed level and less water is wasted. the nutes you are running are fine. ive done h&g, jacks, v+b etc all with great results. use what you know and have. if you have additives that you suspect may slime up the lines just hand water them occasionally. if they mix well in the res and dont leave a slime they are probably fine. i like to run a dead res with bleach to keep any nasties from forming in my res/lines since i like to do a giant set it and forget it res.
if you wanna do a weekly/bi-weekly flush just hand water your pots. wont throw off the blumat at all. it will just stop dripping until the extra moisture equalizes to the point you had set. i i really wanted to get crazy i could plumb up a standard drip system for my weekly flush but im already saving so much work here i think it would be better off spending the time getting to know your plants so to speak.
most people like to do a "loop" on their feed line rather than a straight line and a cap at the end. that encourages air bubbles to get trapped. if you do the loop with both ends to the res the bubbles will rise up and out.
inline filters are cheap insurance. i just bought 5 1/2" inline from hydrofarm on amazon for like 15$. dont want a piece of coco cock-blocking a dripper.
this system is badass if you want a simple to run, nearly hands free grow. im definitely not advocating showing up once a week lol, but it most certainly can be done. i think the ultimate setup will be undersized aeration/fabric pots with an aerated coco blend like tupur. i have been following DJM's advice like the bible this round. environment is #1 and everything else will fall into place.
my plants are growing fast as hell right now and thats on my shitty, water when i can schedule. when these get installed and keep them at optimal range 24/7 shit is gonna BLOW UP.
this is 2.5 days growth, hand watered, 85 degrees and 70+% humidity. follow the VPD chart and you will kill it almost every time. catastrophes excluded of course lol. these had a root zone pathogen that im still battling but the bleach is getting it taken care of. i reused old drip lines from an old pump/manifold system that had been sitting with water in them for months(dont judge me) and it infected everything.