can you guys tell me how to use tap water correctly for instance say tap water un-nuted left out for 3 days is 700 ppm , useing gh 3 part how would one mix that and what ppm would you target for veg and flower ?

ones mixes a rez for a 2gal waterfarm .

heres the formula and what i came up with and please tell me whats wrong with it and what corrections i need to make thank you .

total mil and ppm for 2 gal rez for veg
tap water @ 715 ppm
10mil micro @ 45 ppm
20 mil grow @ 440 ppm
5 mil bloom @ 90 ppm
ph down @ 20 ppm

total ppm @ 1310

for veg i typically work my way up from a few hundred ppm to maybe 1000-1500 (tops depending on strain) for veg. then up to 2000-2500ppm for flower. so your tap water is very hard, which can be a problem for plants. i would suggest getting nutrients that are specifically made for hard water. you may want to look into buying a R/O filter. or, since you said you only have a 2 gallon res (which by the way can only support 1 plant), you can always buy steam distilled water from the grocery store for around 80 cents a gallon. here is a link to hydroponic feedings, scroll down and you can see how the ppms go up. this is for a nutrient sensitive strain, so the ppm only goes up to around 1400, which is low for flower in my opinion, but hopefully it gives you a better idea.

Hydroponics Feeding Schedule

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will epsom salt correct the cal and mag missing from RO water ? or would i need to get calmag or cal and mag ? either way if i stay with tap water would i need just hardwater flora micro and regular grow and bloom ?

Holy frick...that's the highest ppm's I've ever seen listed for tap water. It's a well...right? (if it's "city' water I'd raise holy hell and make them buy the RO...

but yeah, you need an R/O. A friend of mine had simialr hard water. his grows di well in veg...green, green, green.... but 4-5 weeks into bud, just as the buds should be rockin...things would STOP DEAD in their tracks and bud formation would stop.

you can try it....and you may be OK....but IF things suck..you'll know why.

good luck

ww

i believe the epsom helps with mag deficiencies, cal-mag helps with both calcium and magnesium. if you have hard water which has alot of calcium (which yours prob does), you need the epsom salt to balance out the large amount of calcium (which locks out magnesium). for R/O water many people just use the Cal-Mag, but a pinch of epsom cant hurt.

I think the measurements are 1 tsp of Epsom Salts per gallon of water. For Cal MAg, use 1-2 tsp per gallon.

__________________

"Remember, you can never overdose - you can only under-dose. We are just making sure we aren't under-dosing."

I am a medical marijuana patient - my plants and use are covered under State Law. I do not endorse illegal activities in or out of the state/country. So don't tread on me.

Spring '09 Grow Chocolate Thai: http://www.greenpassion.org/showthread.php?t=7928

Current Fall '09 'Red Diesel' LED Grow http://www.greenpassion.org/showthread.php?t=14415

wonder what would happen if i mixed tap water and ro water half and half would it bring down the ppm to half ? just wondering

Yes...that should drop em by 1/2.

Might be an option. 350 is managable. (I'm at 230-300)

ww

Yes that's right,if your water is that hard get the hard water micro.But like Dieabitc say just two gals I buy the distilled water and add epsom salt at one tsp per gal or get cal-mag plus from botanicare erther one will work.With the total ppm just minus the waters ppm's from the total ppm's and that your nutr ppm's.You can do as I did buy these two filters from homedepot it lowers my ppm's to 200 and takes all the chroine out of the water too. Here's a pix of what I have to filter with. Peace

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Check Ebay for R/O machines. they are incredibly cheap.

ww

ok great !!!!! this is getting somewhere ,,, have an ro filter but could not dial it in and couldnt figure out why , then switched to tap water and that didnt fix it , asked about this in another thread but guess i didnt fully understand the answers until it was compared to tap water , and for the 2 gal res well thats the mother plant thats gonna get cloned once she recovers . thanks a bunch for your help ive been fretting the downturn

ok ! for the time being , in a 2 gal res it has 1/2 tap water 1/2 ROwater and the ppm is close to 350 , have put in 1/4 tsp of epsom salt which brought it to 400 ppm , decided to flush for now but when i add this formula of nutrients do you think this will work out ? or is there something i can get a the grocery store that i can use for calcium and go straight ROwater --- no hydro store anywhere close

water @ 400 ppm
10mil micro @ 45 ppm
20 mil grow @ 440 ppm
5 mil bloom @ 90 ppm
ph down @ 20 ppm ? wont need as much now with ro water

total 995 ppm veg

BAKING SODA easy enough and will replace the stuff Missing from the RO treatment. I'm a dirt farmer and I cannot answer you other questions.
Good Luck

cool --- in what incriments per gallon per say

I am not sure. medicine closet had the lack of calcium in his grow because of ca deficiency. I'll ask him and send you the reply. He pops in later in the day. It was around 1 tsp/gal but let me make sure

A coupla things I think you may be confused on from what I'm reading in your post.

pH adjustment isn't measured in ppms. You need to have a meter and use whatever amount of solution it takes to adjust to a specific point on the scale... 5.8. -- 6.0 etc.

I would avoid using anyhting not specifically meant for a hydro grow to replace/replicate things like calcium. I've done this awhile and the baking soda comment was completely outta left field for me. Ain't no way I'm putting that kinda s h i t on my ladies! That goes for vinegar as a pH down or anything else schwag. Talk about asking for problems.

Epsom is OK to use....however...I would advise against dosing plants to treat symptoms you AREN'T SEEING at present. With some tap water in your mix you will probably not see a cal-mag deficiency....and if you do..it's gona show as brown spots on the lower leaves. Treat it THEN and take the old leaves off....IF, that is..it shows at all.

I'd also cut my nutes in 1/2 to start. 900+ is hot for seedlings right off the bat.....so ease into it so you don't set yourself back (or kill em) with a nute burn.

slow and steady folks..

ww

not confused , have both tds and ph meters , all 3 gh parts where measured with tds when mixed individually, then measured again after useing ph meter to adjust ph to between 5.3 and 5.8 and 20 ppm is what it came out to ----- ph up and ph down changes the ppm , should i even count that ?

The RO process takes out some Ca. If you have ever eaten a cake or home made cookies then you ought to be dead because the deadly baking soda is in a lot of things we eat. He asked for a way to add calcium to his grow with something from the grocery store, You still haven't answered his question.

We aren't baking cakes here...and you didn't answer his question either because "baking soda" isn't a quality calcium source as it also contains sodium bicarbonate (SALT) and ammonia.

I won't answer his question because I don't use grocery store products in my hydro grows and wouldn't steer anyone else to do so...especially if I had NEVER USED THE PRODUCT MYSELF and didn't grow in hydroponics to fill my own stash jar....as happens to be the case with you.

Watch for deficiencies, greengenes...and wait til they show to do anyhting whatsoever to "treat" them...especially with sketchy products that aren't made for hydro.

ww

Okay here's the scoop on your R/O situation. Reverse Osmosis systems all have different Membranes. Many of these filter out not a portion but ALL of the Cal and Mg. And Zinc and Copper and Molebdenum and many other minerals that you can barely pronounce let alone spell.
Epsom salt is a buffer for only 2 of those .Mg and a small amount of Cal. I really do not reccomend Epsom salts for cal deficiencies as there really isn't much in Mag Sulfate(Epsom Salts) but I do say get some CalMag. Bone Meal is also rich in Calcium but I have yet to experiment with this Organic Compound. After much thought and having to deal with it I have come pretty much to the conclusion that R/O water truly only benefits a Hydroponic Method. When it comes to soil it just seemed to me that the plants responded better to my cal rich tap water while out of the tap the Ph never budged from 6.3.
You'd be surprised in even hard tap water how many beneficial minerals there are in there. Softened water should be tested regularly I think in TDS and Ph. Dont want undissolved Sodium Iodine (Salt) in your plant water. Salt is absolutely toxic as hell to a pot plant. It will reduce a plant to dust in under 24 hrs given a good dose of it say a regular waterring. I can only imagine how deadly it could be in a large Hydro Res. I do think Reverse Osmosis water is the way to go for Hydro though guy's even though I have not used it myself I personaly know of some that are using it and with GREAT success. I can say that I have learned to get lightning fast with my Ph and TDS Pens though.LOL Calibrating kinda sux but the rest is just a glance and yer good. Oh yeah well it kinda helps too when ya have smart people like you guy's teach me. Piece o cake. Always check your water and your Nute/Additive solutions. Makes yer life and the Plants so much easier.
JMHO and Peace,
Med

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Absolutely Correct Die.
Thank you for mentioning this.
Med

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