My Tnk Has Come :)

[SkiFletch]

Is this for a sump or a closed loop? And do you plan on using any wiers/dursos or other methods for quieting any air gurgling?

 

[robbhp]

it will be for the sump. it drains from the center back and down into the lefthand cabinet. the only thought i have given to it to have the grills just to stop snails and fish geting in there. i know you said that you would put a t peace on the back but i did not understand what you ment. also the womman in my life would kill me if the tank come away from the wall any more LOL. so i am open to idea's , the only real restrictions are to work with the given box, and the tank is not allowed to move away from the wall. (well any more than it already is . at the moment the moment the pipe come out of the back of the tank, then into a 90 bend and then down to the sump.

so lads what can we do

many thanks rob. also the overflow box is 175mm wide ,by 100mm deep, by 75 tall. hope that helps a bit

 

[robbhp]

ok ski i see you are reading this now is this what you mean

but inside my tank not on the back .

 

[SkiFletch]

Well you'll need to make sure the sump doesnt make horrible gurgling sounds else the woman in your life will probably not be happy either

I'm not sure which I'd suggest at the moment (internal weir, external durso), or an internal durso. Might help to start reading up online on durso standpipes (just a google search will suffice)

 

[robbhp]

i think i will go with an internal/ exturnal durso . i will just have ot have the same 90 bend but then i will add the T section , this should help with space needed at the back of the tank, or lack of space LOL.

cantwait to get started, also at what depth sould i have the overflow box from the main tanks water line i think at some point some one has said 10mm but i could have just made that up LOL

many thanks

 

[robbhp]

ok what size return pump do you think i should go for people, i am thinking about one of the eheim units. the 3000lph ones or pos one of the Ocean runner 3500. not to sure yet thought. also from the above post how much lower should overflow box be frome the sruface of the tanks water line.

many thanks ROB

 

[SkiFletch]

Tough to say. I'd probably use something like a mag 5 or 7 type pump for the return. Remember, not only does the pump need to be capable of higher flowrates, it needs to be capable of pushing against a lot of head pressure. Some eheim models are definitely up to the task, while others, not so much. I'm pretty sure the eheim 1250 would be a good model for that size tank. Remember, you dont want a pump thats too big, or one too small so before you choose one, post its specs here for review

As for the overflow, I'd have its lip at least an inch below the highest water level you'd like in the tank.

 

[robbhp]

many thanks mate, i was thinking of the eheim 1262 that pumps about 3500 LPH. but i would have thought that would be at zero head pressure. my pump will be in the sump , so it will have to travle up about 1.5 m or 4.5 foot . so i was thinking that this would drop it to around the 2800 LPH maybe even less.

i have also looked at the 1250 think it is 1200 LPH, i was going for that one too but then with the pressure drop i thought may be the bigger unit would be more up for it. also will the 32mm overflow be able to handle 3000 lph max

many thanks on the overflow hight thingy . got the spec on the sump pumps, I think the 1262 will do the job for me and there is only abut 20 squid in price difference between the 1262 and the 1260.

also after the great bit of siliconning, i did on my overflow box , i am going to build myself a sump . going to get all the glass cut for me and then have a shot of putting it together. well i will get some pics up of the sump tomorrow, i hope by then to have the tank/sump built ( only the outerbits of glass) at which point i will come back to you guys to get a bit of info on where to put all the baffles and bubbe traps.

many thanks once again

 

[SkiFletch]

Well, the real question is how much do you want to use your sump return for internal tank flowrate... Just because your overflow can handle 3000LPH max doesnt mean you want to try and give it 3000LPH. As a matter of fact you prolly want to be no more than half that flowrate cause as the pipes and fittings age they'll build up gunk and slow down. Also the faster you push water up the higher your display tank level will raise so keep that in mind as well.

As I said at first, how much flowrate do you want out of your sump return versus how much you're going to get from powerheads or a closed loop internal to the system? Remember a sump pump wastes a lot of its energy pushing water upwards (gravity's a real bear) while a powerhead or closed-loop system pushes lots more water for less energy cost (and therefore electrical cost). For example, the eheim 1260 draws 65W of power while the 1262 draws 80W for a max flowrate of about 900gph. Compare that to a Seio M820 that pushes 820gph for a mere 18W of electricity... See where I'm getting at?

Also, if you do decide to go with a 126X series, use the 1260 as its impeller is designed to create more head pressure as opposed to the 1262 which is designed to sacrifice head pressure for flowrate. In a sump pump the biggest two characteristics are head pressure and wattage, not flowrate. The 1260 will be more up to the task and save you lots of energy compared to the 1262. If it were my tank, I'd still use a 1260. I use a Mag 7 on my own tank (similar to the 1260 in stats) and I actually throttle it down a little with a re-circulation loop cause its too much flow for my overflow when wide open.

And make sure whichever way you choose to get a check valve and drill holes in the return pipe right at the water level to break siphon during a power outage. Cause if you use a check valve only Murphy's Law will come back and bite you... When your power goes out, be sure a snail will be in the check-valve area

 

[MoondustBob]

I just wanna say, great topic guys




I've ordered the same tank (from N&D I'm guessing ), but it will be used for a tropical community instead, but I've still enjoyed reading your plans and seeing more of the tank


/subscribed

 

[robbhp]

yea mr N&D is the very person that i got my tank from , could not understand a word he said tho . very nie man and his tank are the right price

many thanks ski will take your advise on the return pump , it will be used for some flow but manly it will be for microalgy down there, and skimmer/heaters. going to build a low flow area into the sump as well .

many thank again lads, and girls if there is any

 

[robbhp]

ok got the sump cut and silisconed up today, and is now fitted into the tank very happy with the fit of it as well, gess thats the great thing about building it yourself. the next steps are to fit the bubble traps, and all the baffles. i have worked out that i will need to leave 3.5 to 4 inches, in the event of a powercut. this should give me a good safty margin to. also the sump return pump will be lifted up fo the floor of the tank so that if the over flow becomes blocked it will not over fill the tank. all eheim pumps have thermal overload built in so it shouldn't fry my pump.

any way all that i know have to do is buy my 1260 eheim pump a 75 a day ro unit with DI and fit the maxijet mods up and i can start filling. O and sort out the overflow pipe work and fit the baffles in the sump

ROB

 

[hoarp001]

what is the jet pipe system for on the bottom of the tank? Wont this mean that the sand or gravel is constantly going to be swiling about and stirring?

 

[MoondustBob]

yea mr N&D is the very person that i got my tank from , could not understand a word he said tho . very nie man and his tank are the right price

I haven't spoke to him yet, but his emails are hard enough to understand as it is

 

[robbhp]

what is the jet pipe system for on the bottom of the tank? Wont this mean that the sand or gravel is constantly going to be swiling about and stirring?

the exit of the pipe should just sit above the gravle so i hope they will not mix it up to much .
i have done before on a much smaller tankk and it seemed to do the job, but all i can do is hope LOL

ROB