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In advice to someone recently: Osmocoat seems like a wise idea for DIY root tab solutions that has seen some revisiting lately(been used for the last 30 years by aquarist). Slow release, small etc, ice cubes filled with Osmocoat also would make adding it in spots very easy too. This is similar...

This is a nice simple easy to use tool for modeling the concentrations in EI type dosing routines. Some may have already seen it: http://wet.biggiantnerds.com/ei/con_v_time.pl Plug is say 10ppm of NO3 for stuff(any stuff can be used) Then 3x a week, then 50% and then view. Change to suit...

Hi, Bear with me here and think about this, not the perceptions, rather, the facts and critical thinking involved.I have long been hearing folks poo poo EI for being "crude", "merely a guess", "inaccurate", "old ways of doing things", "Less advanced" and many other similar terms. Ironically...

Some UK members have expressed interest in Fe Gluconate dry powder. I have shipped 5 pounds over to try out. This is a weaker ligand than the chelators like ETDA and much weaker than DTPA. The benefit and trade off is the weaker bonds, however also means easier for the plant to take up, so it...

I've had a few discussion with folks, mostly in the UK over this one. I will not get into the issue with the difference between the mass ratio, which is what is used, versus what Redfield actually shown in his paper based on averages of marine phytoplankton, it was atomic ratios, atoms, not...

This is just a solution for folks wanting a daily routine that's actually older than EI and was just a slight tweak of PMDD using PO4 as well and bit higher nutrient levels: EI was developed mainly in response to folks that had no test kits that lived in 3rd world countries and for lazy/cheap...

This may help some of you get a bit closer and tweak things a bit further: http://www.barrreport.com/estimative-in ... osing.html As most methods today seem derived from PMDD, the addition to this method of PO4 as descrived on the APD about 10 years ago added a lot of success to the hobby...