6/4/19 1:30am Start of day 11
temp 78 rh 75% ec .9 ph 6.0
Hey 420 fam! Got some new things to report. I was able to complete and send out the sex kit today. I also adjusted my nutrient solution a bit and started to monitor the co2 levels in the tent. The tank and controller aren't on yet but Ive noticed elevated levels of co2 in the house recently on the apcem so I thought I would monitor it. The wife has been cooking up a storm and with a gas stove it raises the ambient co2 from 1200 to 2500 ppm. Now if i can just get her to cook every 4 hrs for 15 min then i could get rid of the tank lol.
The sex kit was actually pretty easy and Ill go into detail about the 2 companies that offer mail order sex testing (that i know of) because I think its a great service. I chose Phylos this time and SteepHill was sold out anyway. Phylos offers a 4 site test for $60 plus $9 shipping and expects you to provide the return envelope and postage (annoying). SteepHill offers an 8 site test for $100 with free shipping and they include the return envelope and postage (more professional approach and better price/site). Last grow, SteepHill forgot to send my test kit for a week until I emailed them (they said clerical error). Then it was 2 weeks to get results from when I shipped (they claimed high volume time). Couple this with the fact that SteepHill wants a sample from the 2nd set of true leaves (14-17 days grow time), while Phylos wants a sample from a cotyledon (after 1st set of true leaves have sprouted, about 7-9 days of growth) and you can see why I went Phylos. They only requested a small sample, I used maybe 20% of one cotyledon, very efficient. Because it was only a 4 site test, I chose the best 4 based on root structure. If they all come back male, I will be forced to buy another test and grow the remaining 2 out while I await their results.
The seedlings seem slightly pale from my experience so I increased the nutes to half the recommended dose for seedlings. I had started at 1/4 to ease them into it but it seems they might be hungry, or need a higher ec value to help facilitate the flow of nutrients into the roots. I added enough calmag to make it 1.5ml per gallon. I think this might be low for ro water and I plan on upping it as I increase ec in the coming weeks. With ro water, you're essentially replacing the calmag that isn't there so I wonder if there is a point in going "low strength" on the calmag during the seedling stage but we shall see. I also increased the amounts of all 3 floratrio bases to 1.5ml/gallon each. I increased the hydroguard to 2ml/gallon. I ended up buying the Armor Si and added it at the rate of 1.25ml per gallon. This required 5ml of ph down to bring the ph back to 6.0. Also when I add anything to my res, I pull out 5 gallons, add everything I need to the 5 gallons, ph it, then add it back to the res. This way it mixes much faster and is safer on your roots/nutrient solution then adding nutes directly to your res which shocks nearby roots and can cause nutrient precipitation in the area you dumped it in, leading to unusable salts that take up your valuable ec.