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Are you stoned grow2019?? Haha.

Yes that's fine. Just dump your old nute and water solution and top up with fresh water, add nutes to desired ppm. All you have to do is keep an eye on your ppm!

Some very good points there Logan!!

Either way I think a res change is due.

Check and smell roots for root rot!?

It made my life so much easier when i changed to advanced nutrients ph perfect. Took alot of work and worry out of it. Don't know if you've heard of it before but when you mix your nutes it automatically ph's it for you and if the ph drifts, dont worry about it as its chelated and absorbs...

Itl be safer for you to do it everyday till you get the hang of things and get dialled in i reckon.

Go with the 2 for now then. Maybe try and find out the flow rate...? You may need another one or a bigger unit?

I've used the little dual port air pumps before and found the flow to not be enough. You want plenty of fine bubbles. And make sure the air stones are right at the bottom. Yes you could block one off to give alot more to the other one but it also depends on the size of your stones. Have a look...

70% is fine if in veg. As long as temps are not too low and you have good air exchange/flow. 80% is too high in my opinion. You run the risk of getting powdery mildew. You could extract the air a bit more im your grow room to remove some humidity.

And Logan had a good point about the air pump. Do you know how many litres per minute yours pumps out??

Alot of people suggest to the bottom of the net pot but i fill mine pretty much all the way up. As long as you have no light on your water. This is one reason you can get root rot. (Dwc growers nightmare lol) and just be careful not to let the water drop too low between top ups as over time you...

So did i haha. Dwc is awesome when u get the hang of it!!

Technically they don't talk to you lol. but just watch them once a day when you ph and see if you notice anything different from the previous day. youll see some sort of sign if your not meeting their needs. Generally when they drink alot thats a good sign their healthy. Also they will most...

Yep that's what i would do if I were you. And as Logan said only set to 5.5 if ph is constantly rising. Check on your ph daily. And that's what it's all about. Gotta ask questions or you won't get any answers.

I've never grown autos so can't comment on that side of things. And totally agree with you Logan. It's about reading your plants and how they react. I've been out of the ph'ing side of things for about 3 years now and you bought back a few memories lol. But I think grow 2019 needs to sort out...

Sounds like you've got a good plan connoisseur! I can't wait to see the updates either!! Hope all goes well for you brother!!

Nute burn is a dead give away that your ppm is too high but it can still be a little too high without showing nute burn. In veg the veg nutes you use are higher in nitrogen. Generally you can look at the colour green the plant/s is. (Strain dependant also as some strains are slightly lighter or...

Try dropping your ph down a bit more. Hydro ph off the top of my head should be between 5.5 - 6 with 5.7 to 5.8 being ideal. And yes get your ppm to where you want it then ph your water. And I always found my ph would rise unless I had root issues then it would drop and thats when i would panic lol.

Not sure about gallons but i put 2 to 3 in a 10 litre bucket! You want oxygen to your roots and co2 is what the plants breathe in and helps with photosynthesis. (There is around 300 - 400ppm of co2 in fresh air) so fresh air exchange in the grow room is super important if not running a sealed...