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For sure, flouride and chlorine is used in the tap water sysem here in the UK to prevent bacterial growth in the pipes between the the processing plants and when it comes out of your tap. but in very small amounts, reletivley speaking.

chrorine is pretty toxic, too! but we digress.

Back off the fert heat a little by diluting with water is my only suggestion, down to about 0.8 and see how they respond over the next 5 days. Them plants look to small to cope with 1.3EC...looks like a nice set up!

Very intereting point.. I use a product called silver bullet, which is essentialy hydrogen preoxide, but also contains sliver, which keeps it stable in the solution for far longer without affecting anything, so far it's working out well...so far, lol!

EC is EC, it doesn't matter... if you've got a 100 litre tank or a small bucket, it's just the concentration. You'll have to measure the EC (or PPM) and adjust accordingly. I can only say what I've done, and I prefer to deal in EC rather than PPM - My tap water is EC 0 or EC 0.1, so if i'm...

I've just actually looked it up, and it seems "bleach" is an 'umbrella' term that can cover several types of chemicals. Hydrogen peroxide is favored as it doesn't produce chlorine gas, and it breaks down in water into oxygen (good) and hydrogen (inert, in the volumes we are talking about.) Both...

I'm currently running mine at about 0.8 -1.0 EC, but they are way into veg now... you dont wanna go too hot with the ferts in DWC. For a tiny/sick plant, I would suggest thats way too much fert, but that's just my observations.. I'm a noob with DWC.

plain bleach is hydrogen peroxide, that's what bleach is.

WTF lol ? you dont want to be upping your nutes when the plants are so small, sick and no decent sun leafs...

For sure... it's not a golden goose, but black lines remove a potential problem, you don't want any light ever getting into your liquid, aside from when you have to do maintenence, and its unavoidable. It's asking to get unwanted bacterial growth, etc. Trust me I learned the hard way! Hoses are...

How are you measuring your EC? what pen/readings etc? They look like they are getting fried.. I was gonna ask also what light/intesity/distance you are using? but it does't look like light burn, but it would be usefull to know aswell. They look like they are being cooked from too much fert...

come to think of it, these plant are quite nutritional... anyone done any cooking with the roots? save just composting them or putting them in the garbage?

Some spring onion and chilli sauce and that looks like it would make a great soup! Add some spicy pork and you've got a really good meal there ;)

I think I might have to trim the low bramches off!

Day 59 Ye Gods.. roots are going mental and veg growth is very good.. I'm gonna gave to flip to 12/12 soon or I won't have the space. That's kind of annoying as I don't wanna trimm off the low stuff, but it has to be done :-(

i'm running some monsters at the moment, but they are only 7% thc but also 7% CBD . I'm a big fan of keeping a balance. I really don't think chasing ever higher THC is the way to go.

I know what you mean, super high THC might sell, but it absolutley dosen't make for a high quality smoke, nessesarily. It's a bit like going into a bar and asking for a nice home brewed beer or cider, only to be told that the only drinks they have are vodka and whisky. Dutch passion have been...

I have a simmilar system, but its my first time doing DWC. Have a look at my grow in my sig below to see some pics. I've not been replacing the solution unless I run into issues, just topping up with water and more nutes as needed. I have had some issues with bacteria growth though which I had...

yeah you'll probably need a chiller then...

I guess you mean 40f rather than 40c.. that will cook your plants pronto. why does everyone hate the metric system? it's much easier to calculate.