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Plumbing equipment in a non drilled tank

Discussion in 'General Plant Topics' started by tefsom85, Mar 26, 2009.

  1. tefsom85

    tefsom85 Lifetime Members
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    I am curious what the best way of going about plumbing filtration/CO2 in a tank. I have a 120G that I am going to be using a Mag 9.5 aerating pump for CO2 and an Eheim 2250 and perhaps an Eheim 2228 for filtration. My question is.. what is the best way to go about this?

    Installing each item standalone is a no brainer except that I would now have 4 or 6 intakes/returns in my tank which eventually will be mostly hidden when the plants grow. However, I was wondering if perhaps some sort of sump would be a better method with one intake going to the sump and plumbing everything off the sump. This takes most of the piping out of the tank as well as the ability to move the heater out as well.

    Sorry if this is a dumb question but I have never done a sump before and have no clue how to properly plumb this equipment in a sump scenario. Anyone have any ideas/suggestions?
     
  2. shoggoth43

    shoggoth43 Lifetime Charter Member
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    Sumps can be dirt simple or incredibly complex. Essentially you need some way to get the water to the sump ( overflow ) and one or more pumps to put the water back in the tank.

    You'll need:

    A) Hang on back overflow, or have the tank drilled for an overflow or standpipe

    B) sump - another tank or even a 5 gallon bucket

    C) pump, or pumps, to put the water back into the tank


    You can run everything to and from the sump if you want including the filters. You would then pull the water from the sump to the filter and then run the filtered water back to the sump, or up to the tank. You MUST include a siphon break or check valve in EACH path you have up to the tank or you will have a flood when the power dies. If you run all the pipes up to the tank from below you pretty much have no choice but to use check valves. This can be somewhat complicated but it allows for a completely clean display with no visible pipes or anything going over the sides of the tank.

    IMPORTANT: Make sure the sump will hold ALL of the water that will drain out of the tank during a power failure. i.e. the level at which it stops either from check valves, overflow, and/or siphon breaks. This is usually an inch or two. If you forget this you'll have a mess to clean up later.

    If you want to get fancy, you can do a "hybrid" kind of system. The sump would handle some things like the CO2 and heater and circulation. The canister filter could then have its own intake and return lines and the other pump can do the same for additional filtration.

    Note on efficiency - Every time you have an air gap of some sort in the system you are using additional power. For example, if you run the cannister intake and exhaust into the tank directly it will be far more efficient and get you more flow than if you run the intake of the cannister from the sump and the exhaust into the tank. Why? You're going to be pumping "up" to the level of the tank and that takes power. An easier way to visualize this is to hold up your intake and exhausts and see where the water lines in the tubes are. If they're pretty close to the same height that's going to be more efficient than if you have a difference of a few feet that the pump has to make up.

    For some this is more of an issue due to filters not always having the best flow to start with. For others it's a financial one when they start to deal with the power required for marine tanks to get flow. This is one of the major reasons you see prop pumps like Koralia for flow.

    Based on what you've described I'd probably do something like this.

    CO2 and heater in sump. You'll need to test your cannisters and see what you can get out of them. Get them running and run the intake in a bucket on the floor with the water level about where you think it will be. Raise the output up to the level of the tank top and see what kind of flow you get. If it's miserable, I'd suggest either another filter, or run the output back to the sump instead and get a better pump for the tank return. For better flow in the tank, you'll probably want to run a couple of returns to the tank. You can run these off one pump, or multiple pumps/filters. Experiment. If you're going to buy a tank for the sump, you may want to consider a wet/dry filter instead. There are threads here on their use with overflows and CO2.

    If you do use the overflow/sump these may be sanity saving...

    Hofer Gurgle Buster

    Everything You Always Wanted to Know About Sumps, Part I by Greg Taylor - Reefkeeping.com
     
  3. inkslinger

    inkslinger Guru Class Expert

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    With a tank that size You would need good circulation for co2 and ferts, I would go with any good HI Pressure pump and canister filter ,I have a 110g I have a mag5 w/co2 reactor and heater in a close loop with a head pressure lost I'm lucky I get 200gph. I also have a real nice Eheim Pro 2 2028 275gph that also drops your pressure when you add media and it starts to get dirty. You should try to get a lest up to 10x turn over rate of your water. I have some equipment on the side to replace I got a Blue Line 55 HD 1100gph pump , 2 Y split returns,Nu-Clear filters 533,547 I still need to get a DIY Reactor and UV light and all the pluming parts.

    :cool:
     
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