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Hydroponics Tuesday: Chlorine
11/27/2007 7:11:00 AM

Another week, another lesson...  We've been learning a lot more about water in recent weeks.  We've just purchased a new water filter for the plants.  Here's why:

Many of the supplements that we frequently use contain beneficial organisms that are helpful to the plants.  Until now, we've always used normal, unfiltered, city water for our hydroponics.  Our results have been pretty good, but we think that there's room for improvement.  Why filter?  Our city water contains chlorine.  It also contains chloramine.  There are a few differences between the two...

Standard "chlorine" isn't really the clean chemical chorline, it's actually HOCl (chloric acid).  It's used all over the place for water treatment.  This will kill biologicals in your water, that's why it's there.  However, there's an upside:  It's got a relatively short "half life" in your water.  It evaporates out in about 48 hours.

Chloramine are a different breed,  It's a more stable compound, and it won't evaporate out of your water at all.  It's formula is NH2Cl, and it's quite tricky to remove from your water.

Hence our new purchase.

We've bought a Hydro-Logic Small Boy filter.  It's capable of running in-line with our fill line for the tanks, it's pretty small, and the price was reasonable.  We did a lot of reading, and it was the best deal for a chloramine-capable filter.

Sadly we haven't used it yet.  We've got a water change next week, so it will see some action.  Note:  It's got attachments to run hose-thread.  That's a plus. 

This week's eggplant photo:

Hydro2-ZJ.jpg

And the overview photo:

Hydro2-ZI.jpg

PlantTypeStatus
#01Alexandria Alpine StrawberriesSmall fruit and flowers are appearing regularly.  Some leaf "crinkling" is visible, but I feel it's a holdover from earlier troubles.
#02Alexandria Alpine StrawberriesSmall fruit and flowers are appearing regularly.  Some leaf "crinkling" is visible, but I feel it's a holdover from earlier troubles.
#03Alexandria Alpine StrawberriesSmall fruit and flowers are appearing regularly.  Some leaf "crinkling" is visible, but I feel it's a holdover from earlier troubles.
#04Alexandria Alpine StrawberriesSmall fruit and flowers are appearing regularly.  Some leaf "crinkling" is visible, but I feel it's a holdover from earlier troubles.
#05Alexandria Alpine StrawberriesSmall fruit and flowers are appearing regularly.  Some leaf "crinkling" is visible, but I feel it's a holdover from earlier troubles.
#06Alexandria Alpine StrawberriesSmall fruit and flowers are appearing regularly.  Some leaf "crinkling" is visible, but I feel it's a holdover from earlier troubles.
#07Alexandria Alpine StrawberriesSmall fruit and flowers are appearing regularly.  Some leaf "crinkling" is visible, but I feel it's a holdover from earlier troubles.
#08Alexandria Alpine StrawberriesSmall fruit and flowers are appearing regularly.  Some leaf "crinkling" is visible, but I feel it's a holdover from earlier troubles.
#09Alexandria Alpine StrawberriesWe've cut back the eggplant to give it more light, as it was really under the canopy.  It's obviously not as developed as the others, but it's healthy.
#10Andrew Rahart's Jumbo Heirloom TomatoRemoved on 11/18/2007.  It wasn't doing very well.
#11Delicious Heirloom TomatoPreviously killed through personal stupidity.
#12Bambino Baby EggplantLots of flowers and fruit. The largest fruits have a diameter of 1.5", and are growing fast.
#13Monet's Garden Lettuce
Removed
#14Monet's Garden LettuceRemoved
#15Monet's Garden LettuceRemoved
#16Monet's Garden LettuceTasty.  Eaten on 09/29/2007.
#17Lime Basil
Gone to seed.  Removed
#18Delicious Heirloom TomatoKilled off as of 11/13/2007.  It wasn't doing well, and we ended its run.