little white spots on seedlings HELP

[pothead1289]

would you think that my watering techniques have anything to do with it.

i was spraying them with a spray bottle of water when the soil looked dry on top.
but now i am watering them about a 1/4 cup water per plant a day.

i have no idea how much to water i was trying not to over water by spraying them but i feel the water isnt getting to the roots. could this be?

[JeffersonBud]

I let my water sit out for 3 days in a large 45 gallon rubbermade to dechlorinate. My h20 is only 100 ppm though so I do tend to use 1 ml of cal-mag with my Liquid Karma

[daihashi]

would you think that my watering techniques have anything to do with it.

i was spraying them with a spray bottle of water when the soil looked dry on top.
but now i am watering them about a 1/4 cup water per plant a day.

i have no idea how much to water i was trying not to over water by spraying them but i feel the water isnt getting to the roots. could this be?

Water them by pouring the 1/4 cup of water like you're doing.

Here is a surefire way to water/know when to water:

Take another cup and fill it with dry soil. Use it for comparison against the cups your plants are in. When it comes close to weighing about the same then it's time to water.

Get a hygrometer. Take note of what the RH% is at it's peak after you water. Watch for how long it takes to reach the low end of things. Combine this with the weight technique mentioned earlier.

Take your finger and at the edge of the pot/cup push it into the soil about up to the second knuckle. How wet/dry is it vs if you put your finger in the cup with the dry soil? When it is slightly more dry than wet then it's time to water.

I use all 3 of these techniques together. I feel it gives me a reasonably accurate idea of when to water my plants.

Generally unless it's very hot your plants won't need to be watered daily. They need time for the roots to breath also. Every other day at best.. preferably watering once to twice a week.

With all that said it's all dependant on your plant and no one is going to know your plant better than you. :thumbsup:

[pothead1289]

Thanks Daihashi,
that will really help me thank you.
my watering techniques were bothering and now i will have somthing to base it on.
im going to home depot right now to get my soil.

ill post new pics once my box is revised.

thanks everyone

[pothead1289]

ok so i found that promix. how long should i keep the plants in this promix before i change it. or do i need to change it again will the promix last until maturity.

I also got a soil ph tester and it is somewhere between 6.5 and 6.7


i put mylar on all the walls of my box and put each plant in its own pot
here are some pics.

the three plants in the new box
[attachment=o183868]
the outside of the box
[attachment=o183869]
a close up of the new soil (promix)
[attachment=o183870]

[daihashi]

Awesome. Glad you were able to get ahold of it.

1 thing to note. STAY ON TOP OF TRANSPLANTS.

You can use promix through your entire grow, just be sure to transplant either as soon as they're root bound or once every 5-6 weeks. You'll save yourself loads of headaches if you do

Promix is peat based which has a ph of like 5.0. It's got a lime buffer in there but once it's gone then you're stuck trying to fight off all kinds of crap.

Making sure you stay in fresh soil all the time will ensure that you don't have ph issues.

Also people say to use promix at around 6.0-6.2 or so.. I've kept mine at 6.8 before without any adverse effects, but I had to mention it so you were at least aware.

Good luck.

:thumbsup:

[pothead1289]

thanks diahashi you have saved my ass on this one.

ill keep you giys updated with more pics once something new comes up.

[daihashi]

Also be sure to give them a flush once a month or so before you do a transplant. This will make sure salt buildup is at a minimum and go a long way to make sure you maintain stable PH.