Return to the Hydroponics Forum | Post a Follow-Up

Building my first system (more assembling then building)

Posted by rayinpenn 6 ( on
Wed, Sep 5, 12 at 15:18

I saw a video on YouTube about a Hydroponic lettuce grower in Maryland and I liked the look of his hydroponic channels. Then I came upon them in the new Gardeners Supply catelog; I just could not resist.

Link to Youtube video on hydroponic lettuce aquiculture

I dropped $230 into the following:

From Gardeners Supply:
(4) 8' 4' wide channels
(4) 8' 4' channel lids
(4) return elbows
(4) solid endcaps
(4) endcaps with return holes
(40) 2' netted pots
(1) 250 gal per hour submersible pump
(1) 1 gal nutient concentrate
(1) Block of 100 2' square starter blocks

From PetSmart:
(1) Air pump
(1) Air stone
(1) 8' Black tubing

Anyone have any experience with this type of system? anything else that is a must to have? Nice to have? Can anyone reccomend a ph neutral nutrient mix?

Here is a link that might be useful: The Prudent Gardener

Follow-Up Postings:

RE: Building my first system (more assembling then building)

If I were you, I would buy some 8 cent goldfish or catch some local bluegill. You already bought an air pump, you might as well get some fish, because that is what air pumps are for. Cheap plastic bins work fine for tanks. Then you can use the water from the fish tank to put into your hydro reservoir. The tiny amount of nutrients the fish provide are not the reason - it's the bacteria that you're after. The bacteria that eat the fish manure at the bottom of the tank are beneficial to roots. And they only cost as much as the fish food.

General Hydroponics nutrients are probably the most common brand. They are easy to use. Organic nutes can be clumpy and clog your lines; filter them before using. Your ph will depend upon the strength of the solution and the ph of the starting water. GH makes a different formula for hard water. Filtered water is good; reverse osmosis is the best. But filters cost more than goldfish.

Are you using that system indoors, in a greenhouse, or in the sun? The weakness of that system is the hot sun making the roots get too hot. Inside, climate control is easy. For a greenhouse, you would need the appropriate shade material. Burying the reservoir helps a little. But if you were to set that system up in full sun on a very hot summer day, the roots would rot from getting too hot.

RE: Building my first system (more assembling then building)

Thanks for he advise; didn't realize heat would be an issue. I was hoping to get in a crop before it gets too old here in southeastern Pennsylvania.
I doubt I'll use it during the heat of summer; My regular garden is in full swing by then.

Here is a link that might be useful: The Prudent Gardener

RE: Building my first system (more assembling then building)

Once you enjoy the benefits of hydro, you'll abandon your soil garden.
The best way to limit heat gain is to put aluminum across the top of the system. Aluminum not only blocks light penetration it also reflects radiant heat.
In PA, heat won't be much of a problem if you simply set the system to get full sun from early AM til just after noon (maybe 1-1:30) as the hottest part of the day is after that time. I live in NC and don't have too many problems with the sun using that method.

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Hydroponics Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here