Search results

You`ll find a freshly charged accumulator needs a little time to settle down, a sample taken directly after charging may appear milky compared to a sample taken slightly later which is crystal clear.

The vid wont play for me but if the nozzles drip at 30-35psi i guess they`re not the anti drip version cos they wont do anything below about 58psi. The pressure at the nozzle may not be the same as the pressure gauges on the control board. I always measure water (and air) pressure right at the...

If that was true they would recommend using RO ;)

You need a minimum of 10 different chems to make nutes from scratch, Some come in 25kg, others in 1kg. The initial outlay isnt cheap so if you dont plan on needing a lot of nutes (tens of thousands of litres) it wouldnt be worth it. Other expenses include a couple of sets of digital scales, one...

The easiest way is to desolder the relay and then solder jumpers from the old coil pads on the pcb to the connector terminal pads. That will effectively shunt the coil terminals to the now useless connector block. Note, the colour coding of the blue and brown jumpers in the timer vid are not...

If you buy it by the sack, half a kilo of calcium nitrate is 36p and a kilo of MKP (mono potassium phosphate) is £2.25. You need a lot more calcium nitrate than mkp which is the most expensive of all the common agro chems. Magnesium sulphate being the cheapest at 63p a kilo.

I use a bluelab for measuring nute strength but its no good for comparing in/out ppm. The DM meters read 0-9999ppm and because they have 2 probes you dont have to worry about one being different to the other. You dont need the accuracy of the bluelab for comparing one reading to another. I fit...

You are right, getting a decimal in the wrong place is what comes of trying to do math at 5am ;) It should be 5mm, the snooker ball would be equal to 500 microns..which happens to be the average size of a grain of sugar so that may be where the calculation jumped track ;) With nute strength you...

If you expand the 50 micron example to include the full 5-80 micron range, filling space isnt a problem. A single 50um droplet has the same volume as a thousand 5um droplets. To get a handle on the size difference, if the 5um droplet was a grain of granulated suger, the 50um droplet would be a...

If you work out how many 50 micron droplets you can generate from a given amount of water and then distribute them evenly in the chamber volume it`ll make more sense. As for nute strength, if you have a res of nutes at EC: 0.1 and evaporate half the water the EC will double to 0.2. Droplets are...

I remember the 60`s so age is no excuse lol. All you need to know is P1 (cut-in pressure), P2 (cut-out pressure), tank volume (gallons) and atmospheric pressure (14.7psia) Now to figure how much space the air occupies in the tank: ((P1 + 14.7) * tank volume / (P2 +14.7)) Example: ((85psi +...

If the tank is a true 4.4gal, running it 85-125 will give you approx 1.26 us gal (4.77L). If its 3.6gal (18% less than stated ) it will drop to 1.03 us gal (3.9L). I dont like diaphragms because you have to buy a new tank when they go south ;)

Make sure its designed for potable water. If it uses a diaphragm rather than a bladder i wouldnt run it too close to its max pressure if you want it to last.more than a year. Small tanks can be as much as 18% shy of the stated capacity. Larger tanks are better but could still be 11% shy. The...

Air precharge needs to be 2psi below the pressure switch cut in pressure, so if thats 85psi you need 83psi air precharge in the accumulator. The 2psi ensures the tank doesnt run completely dry before the pump switches on. 80psi on the pressure reducer is ok. A 2 gal accumulator running 85-100...

Inline is the cheaper option too. If you run dtw with decent qualty nutes you dont need to worry about filters

I just drop the seed in the hole and ignore it, i`m no good with tweezers ;)

You have the answer from the "someone" who suggested the hypro model number. If it was off limits they wouldnt have posted the number ;) Hypro`s work well firing upwards in 16" deep chambers and firing downwards in 39" deep chambers, they are short throw (around 12"), hollow cone. Four upward...

A pond pump wouldnt work with my mist heads, it takes 60psi to open the adv`s ;)

Anti Drain Valve`s

Tested and proven to work in AA too