With the thought in mind>>>>I don't know what I don't know. My understanding is the tip size, is fixed (indexed) to the psi & gpm. then regulating to wash whatever, with the unloader valve. and distance from object to achieve the end results. Hope that helps, lots of smarter people here than me.

Hi squid, It is a good thing for the barrels to be at the same height and linked to act as one large reservoir. Your barrel are about 4 feet high that empty to within 18" of the bottom. That gives you 33 gallons per barrel for 132 total gallons. The pressure in psi is equal to approximately 1/2 the height elevation difference (in Ft) of water. Your closest run would have 2.5 psi of average pressure and with level tape run. Your longest run has 3 psi with about 1 psi gain along the run. The ideal run of drip tube to keep pressure even along the run is about 1.5% slope. Your longest run has 18" drop over 24 feet that is about 6% slope which should make the last part of the tape push more water that the beginning. For drip tape higher pressure would be better for uniformity and use of water. Something in the 2 gpm or 120 gph range would be a hobby or aquarium pump by Eheim. They have In-Line pumps that can be used as submersibles as well. I have never used these pumps but found them on Google. It would take you about 66 minutes to use up your 132 gal supply. Remember to filter. Be careful about supplementing Municipal water to your barrels chlorine would kill your fish. Thanks for the added info that made the picture clear. Aloha.

Thanks for the replies This is what I have started so far in Oasis root cubes. Item: Details: Quantity: Each: Item Total: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #9212 #9212 - Chichen Itza 1 $ 3.65 $ 3.65 Hybrid - 30 seeds. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #9336 #9336 - Mulato Isleno - 1 $ 2.55 $ 2.55 30 seeds. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #9638 #9638 - Guajillo - 30 1 $ 2.55 $ 2.55 seeds. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #9450 #9450 - Hot Paper Lantern 1 $ 2.95 $ 2.95 - 30 seeds. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #9250 #9250 - Chile de Arbol - 1 $ 2.55 $ 2.55 30 seeds. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #9030 #9030 - Ancho San Martin 1 $ 3.95 $ 3.95 Hybrid - 30 seeds. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #9272 #9272 - Ancho San Luis - 1 $ 2.45 $ 2.45 30 seeds. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #9037 #9037 - Giant Marconi 1 $ 4.00 $ 4.00 Hybrid - 30 seeds. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #9201 #9201 - Satsuma Hybrid - 1 $ 4.00 $ 4.00 20 seeds. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #9152 #9152 - Pritavit Hybrid - 1 $ 4.15 $ 4.15 30 seeds. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #5761 #5761 - Dad's Mug - 30 1 $ 2.55 $ 2.55 seeds. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #3270 #3270 - Better Bush VFN 1 $ 2.75 $ 2.75 Hybrid - 30 seeds. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #5268 #5268 - Viva Italia VFFNA 1 $ 3.25 $ 3.25 Hybrid - 30 seeds. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Sub Total: $ 41.35 Shipping Total: (US & Possessions - First Class) $ 5.25 Grand Total: $ 46.60 PAID From tomato growers supply. Obviously quite a lot of plants but I give some to friends. I have purchased 2 part product called Aqua Flake. Need to find something cheaper. Supposedly, from what the salesman told me???, a quality product that will clog the least. Also bought something called Drip Clean "House & Garden Drip Clean is an extremely useful agent for anyone working with a drip or aeroponic system. Drip Clean works like a magnet, removing dirt particles at every nutrient feeding so that the piping remains clean. Drip Clean furthermore gives plants a boost, improving their greenness and vitality. Drip Clean is a 100% safe agent for your plants provided it is used in the correct proportion. Drip Clean contains potassium and phosphorus compounds, two very powerful and useful elements in the nutritional plan of the plant. These concern engineered compounds; one particle has been removed from their structure. The incomplete element thus works as a magnet. As molecules always seek a complete structure, Drip Clean attracts dirt particles with every nutrient feeding keeping the drip emitters or aeroponic misters squeaky clean. Drip Clean very fails and is a very effective agent against a clogged hydroponic system. Application Drip Clean can be added to the nutrient container during the entire life of the garden. Prepare your nutrient container as follows: First add the base nutrient to your water filled container. Adjust the EC- and pH-values of the nutrient container. Finally add Drip Clean at 0.4 ml per gallon to your. Your nutrient mixture is ready to use." Does that sound like marketing BS to anyone? I have concerns about clogging. I would think it would not take long for the plants to die if the water was not running. Also a concern because to some extent my plants are out of sight i.e. on top of my flat roof. This is the reason why I am interested with the aeroponics. My property is covered by enormous trees and the roof is the only place that gets full sun. So I didn't want to drag tons of dirt up on the roof. Also could dismantle the system in the winter. I also have to admit that I am thrifty and these systems do seem to use resources efficiently. Although putting plants in the dirt would be cheaper and you could always just buy tomatoes and peppers at the store but this is more fun among other benefits. Lucas it is hard to be offended by someone that is helping me. Thanks Hex I like the idea of short duration sprays as well and is the direction I plan to go with but I wonder why,from the high pressure system I have seen so far, that most go with longer spray times Ex (10 secs. every 10 min.) Same amount of water more or less. Maybe it is easier to pull off, less wear and tear on parts, or maybe it is the controllers they use.???? Side note the link you sent me to has a very similar (looks identical) controller that I use on my fish tank. It is made Digital Aquatics and I am very happy with so far. Also notice they mention insulating root area. Does anyone know what is the approx. ideal temp. for the root area? (for aeroponics) Thanks for any help. Here is a link that might be useful: controller

Now I am purely baffled. I cannot get into Safe Mode with networking or even plain Safe Mode. The screens with drivers stop right away, and I know that there should be many of them. Then after a message that "we apologize...." I use F8 again, choose, and the same thing. If I do nothing more, it boots into Windows. So, I thought I'd try a system restore. I tried every date this week, even before the MS updates, and could not restore. Sooooo, not going to fool with this much longer. Maybe tomorrow or Monday I'll use my full backup and just restore the whole thing. All I'll need to do after that is the August MS updates. I'm wondering if one of the updates caused this problem as Secunia worked fine as recently as a week ago. Can't understand the inability to do the system restore, either. Nothing else seems amiss, and I just ran complete scans yesterday with Avast, SAntispyware, and Malwarebytes----all came up clean.