Rapitest Electronic Soil Tester HELP

just bought one of these testers off ebay for testing nutes npk levels ....i was wondering if this is acurate because i just put a fresh batch of MG soil moisture control feeds up to 3 months into a pot and checked the soil and it said to little was in it .....how is this possiable when everytime ive been vegging with MG i get amazing results good veggie no yellowing at least till a month or so into flower ???....if the meter is reading to low then why wouldnt my plants be yellowing alot faster or dying out alot faster giving me the option to let me no it needs more nutes ....im frustarted because theres no yellowing and my plants growing awesome but still saying to little nutes even on a fresh brand new bag of dirt i dont get this......if it says to little wouldnt it start to yellow or stat showing me problems because of low nute intake im lost here .............

If I read you correctly, you nuted your water and PH dropped,. this is normal.. nutes are acidic,..

As to whty the plants take time to respond.. because they are very trusting creatures and they are in your care.. they are hanging out giving y ou signs and talking to you the best they can.. Cannabis is VERY tolerant.. but it has it's limits..

PH can ALWAYS fluctuate much more radically during veg, but once you get her all vegged out, ph will start really taking it';s toll.


Or at least in my world of plants that is how it works.. good luck~!!

The unit is the biggest piece of crap.....I'm embarrassed to say I sold them at the garden store I managed. They are terrible, not accurate and a waste of $$$$$$.

And the MG soil is not a good choice of soils for your pot grow. They have a high dose of N, which could cause problems if you go into flowering within 90 days of planting. I think they claim to have a 90 day fertilization charge. Bottom line, too high N in flowering. You'll also notice pH problems with it, as the nutrient levels and makeup change over time.

i have always used MG its always worked fine ive actually got an amazing plant just finishing up now that just started yellowing a bit now cause ie stopped the nutes ........... but MG is awesome and works fine ....im just wondering about this tester thing and if it says its TO LITTLE should i add more nutes or at least keeping feeding it nutes when it should be fed untill the tester says IDEAL or what ?