buy a thermometer, couple of quid tops.
what nutes you using? at their age they should be getting nutes every second watering/3 days.
since you don`t have a ph meter,buy bottled water as this will tell you the ph on the label. Your growing in soil right? so you want to buy some water with a ph value of 6.3-6.9, so get water that`s around 6.4/5.
they deffinately need more nutes. what lighting are you using?
If you go into any shops that deal in aquarium stuff,i.e fish,tanks and aquarium lights etc, just ask for a "ph tester kit" they all stock them.
all it contains is a colour chart, ph testing fluid and a vile to which you fill to the 5ml marker with your drainage water.( after watering, some comes out the bottom, that`s how you can ensure that the whole root system gets a drink. that`s the drainage water.)then add seven drops of the fluid to the 5ml water in the vile.you then compare the test vile colour to the chart, which goes from 1-14, with 7 being neutral. MJ likes a ph slightly on the acidic side, as i said 6.3-6.9 is what you shoot for.
you can pick these tester kits for about £3-4, lots cheaper than a ph tester pen without a doubt. The guy in the aquarium shop or maybe even a standard pet store will just think it`s for your fish tank, as all aquariums need to be tested as some fish need to be kept in water, within a certain ph range.
good luck man,and i hope this has helped you out.
keep me informed on your progress dude, anything else you need to know just ask.
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