stan Posted October 30, 2006 Share Posted October 30, 2006 I bet i could get this thing working, but i'm weary of trying it with just a single overflow and no backup drain. Then again, i'm thinking this method would be no less dangerous than a single durso or stockman.. Agree? Quote Link to comment
ninjafish Posted October 30, 2006 Share Posted October 30, 2006 San, Really, what makes this approach so safe is the backup bulkhead - to do it properly, you need two bulkheads. Unofficially though, I can tell you that in the two years that I ran mine, not once did the backup drain get used. The main line never got blocked, despite the fact that I was not using any sort of strainer but just a naked bulkhead. A 1" single durso will be safer than a single 1" herbie (not really a 'herbie' then) because the durso has the full 1" to deal with when it comes to blockages. The herbie will be less than 1" because you have closed down the ball valve to achieve silence. If you still want to give it a shot, I would recommend using that strainer pipe like in the photo, from the bottom of the overlow box to the top. That way, no snail, anemone, or macro algae would be enough to block your drain. Infact, it would be easier to clog the 1" opening of a conventional standpipe than it would be to clog 8 inches of strainer pipe... so I guess it might be safer...? - Chad Quote Link to comment
mybuickskill6979 Posted October 30, 2006 Share Posted October 30, 2006 You're right, depending on the capacity of your overflow box, it could make a big difference to the level of your sump when the pump is shut off. With my 20gal sump it only changed the water level by an inch. If it was going to be more of a change than that, I would just mark a max level on the side of the sump so you didn't fill it up any higher than what it could handle when the power went off. You brought up a good point about the placement of the valve but with my system, the valve was up near the top and I still didn't get any noise from water in the sump - it was totally silent. I really think that the noise isn't from the water but from the air. With my setup, I closed the ball valve a little more so that the water level in my overflow was only a couple inches below the ledge. The only noise I could hear is the slight 'tinkle' of water going over the ledge. If I put my ear against the drain pipe I could hear a faint rushing - the sound of friction between water and pvc... totally inaudible unless you put your ear right against the pipe. My sump was just as quiet; all I could hear was the sound of the water going over the first baffle. Another benefit is that the only bubbles I had in the sump were the ones from my protein skimmer. This is just my experience. I have tried both the stockman and durso and even ordered a professionally built durso online... I can state 100% that this is the quietest and safest way to get water to the sump. Try it and you will see. I'm just trying to help out some fellow reefers - I wish someone would have shared it with me a lot sooner! - Chad sweet then i do understand it pretty well. i well try it sometime. but on my one tanks its gonna have to be ghetto style lol. i need a simple overflow type. its for my turtle tank and constructing an over flow box is pretty much out of the question. but most definitely will give it a try in the future. thanx man for sure. didn;t mean to hurt any feeling but i figured it would help me and others who might read this!! Quote Link to comment
stan Posted October 30, 2006 Share Posted October 30, 2006 Upon further reading.. for those of us with only a single drain. This could prove useful. You place the emergency drain after the exit. Depending on how clean you set this up, it could work. http://reefcentral.com/gallery/data/586/42...ietoverflow.gif Quote Link to comment
Jake15 Posted November 1, 2006 Share Posted November 1, 2006 Im currently working on a 29 gallon. And i have an interal overflow but it is loud because i just have the siphon. I want to do a external durso. Are you guys saying that i do not even need an overflow and i can remove it and put a standpipe on the back? Or do i need it and can add a stand pipe? My hole is drilled pretty low. Here is a pic of the back of my 29 please help i cant stand the noise at night.... Quote Link to comment
mybuickskill6979 Posted November 2, 2006 Share Posted November 2, 2006 overflow is definitely a good idea. if your worried about the noise of the overflow you can put an elbow on the bulk head and run a pipe up a little farther and put an internal dorso and that will help with the over flow noise but you might still have noise in the pipe or tube running to the sump!! Quote Link to comment
j2me5ku Posted December 14, 2006 Share Posted December 14, 2006 tigahboy, what bulkhead size do you recommend for a 20Gal Tall (10gal sump)? I plan to do the external durso pipe mod to my AGA tank. Also, from your experience, do they have the sucking noise? it seems like it would from the design. thanks. Quote Link to comment
j2me5ku Posted December 27, 2006 Share Posted December 27, 2006 tigah, you mentioned early in a post that you use an external durso for one of your tanks. help me remember but you said it also surface skims with the valve cover? is it very effective? how far below do you think i would have to drill the hole to be sufficient to get 600gph with 1" bulk head? i think ive read 2-3" right? just want to make sure before i start drilling. also has anyone tried externally housing a mag 5 as a return on a 10gal sump? do you have pictures? Quote Link to comment
Travis Posted December 27, 2006 Share Posted December 27, 2006 Tigah no longer posts. Quote Link to comment
BrassMonkey030 Posted February 9, 2007 Share Posted February 9, 2007 whats the herbie method? Quote Link to comment
mybuickskill6979 Posted February 16, 2007 Share Posted February 16, 2007 basically it uses water pressure to push the water down to the sump will draw up a diagram in sketch up right now!! Quote Link to comment
mybuickskill6979 Posted February 16, 2007 Share Posted February 16, 2007 basically it uses water pressure to push the water down to the sump will draw up a diagram in sketch up right now!! here it is. any questions? Quote Link to comment
BrassMonkey030 Posted February 16, 2007 Share Posted February 16, 2007 oh, ok so its a full blown siphon with a ball valve regulat9ing the flow. seems like it could be a pain to get the water level right and maintaining it there. nice diagram. Quote Link to comment
mybuickskill6979 Posted February 16, 2007 Share Posted February 16, 2007 thanks lol!! yeah i recon it could be a pain. but once you get it there it stays pretty normal!! Quote Link to comment
Snazzy Posted June 13, 2007 Share Posted June 13, 2007 for the external durso overflow, im going to do 2 1" bulkheads, any idea on how much flow i will get? also should i use 1 1/4 pipe or 1" pipe fine? b/c i know w/ regular dursos you jump up a size to 1 1/4. help much appriciated ~snazzy Quote Link to comment
avalanche1201 Posted June 16, 2007 Share Posted June 16, 2007 ill be using an external dorso...havnt gotten into the details of bulkhead size yet etc, but the smaller the hole the lower rthe h2o level...im assuming thats for the sump level, but i want to be 100% certain.....and not a lower level for the water intake in the bulkhead i feel its a noob question but im blaming the booze for it right now Quote Link to comment
Jason64 Posted June 18, 2007 Share Posted June 18, 2007 How far below the water line does an external durso need to be if you run it Tigah style with just the screen attached to the bulkhead? Thanks, J64 Quote Link to comment
chaostactics Posted July 27, 2007 Share Posted July 27, 2007 bump to the top for an awesome and educational thread Quote Link to comment
joe_n Posted November 16, 2007 Share Posted November 16, 2007 I was wondering if it is possible to drill holes into the overflow box and add on a few strainers. Am I right in thinking that this would mean most of the water in the tank would get into the sump where as with a standard overflow only the top of the tank goes into the sump? Could adding a few strainers to the overflow box help more water get to the sump and filtration or will this stop the oveflow working???? Thanks in advance for any help Quote Link to comment
sayn3ver Posted December 14, 2007 Share Posted December 14, 2007 Can i use a stockman or reverse stockman (hofer gurgle buster) without an overflow? ie, bulk on tank bottom, standpipe, stockman/HGB, the result is the height of the standpipe would set the water level. Quote Link to comment
jpndave Posted January 16, 2008 Share Posted January 16, 2008 BTW, the Herbie method uses two drains, one primary and a second higher up unregulated as an emergency back-up measure. If the main slows down, the backup picks up the extra. And, because it is not regulated, it makes a lot of noise so you know something is up. I just set a tank up this way and tuning was surprisingly easy to do. Quote Link to comment
siwelk Posted January 16, 2008 Share Posted January 16, 2008 im looking forward to trying the herbie method on my 30g build. it seems like a pretty quiet and reliable way to go. Quote Link to comment
jpndave Posted January 16, 2008 Share Posted January 16, 2008 im looking forward to trying the herbie method on my 30g build. it seems like a pretty quiet and reliable way to go. Yes, takes up less room too. You just need two bulkheads for drains though. I am going to change my higher drain standpipe to a smaller screen so I have a larger "margin for error" between the two heights. Should make tuning even easier. Quote Link to comment
siwelk Posted January 16, 2008 Share Posted January 16, 2008 Yes, takes up less room too. You just need two bulkheads for drains though. I am going to change my higher drain standpipe to a smaller screen so I have a larger "margin for error" between the two heights. Should make tuning even easier. are you using a gate valve on the drain to the sump or a ball valve? Quote Link to comment
jpndave Posted January 16, 2008 Share Posted January 16, 2008 are you using a gate valve on the drain to the sump or a ball valve? Plastic ball valve on 1" pipe. I have an Eheim 1260 as a return pump. It is choked maybe 1/3 of the way. Quote Link to comment
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