The spots are more centralized. Some are near the tips. I just cut out the grow big from my nutrient solution today. For the big bloom, other than small traces of nitrogen, there is small amounts of Phosphate, and soluble potash. My roots are white with a little tint of brown. Nothing dark at all. The root length is pretty good. I'd say close to the plant. I clean my reservoir everytime I add more water and nutrients. There is nothing caked in the reservoir. The water pump is fine, so is the air pump and stones. I will try to get fresh new pics up on here tomorrow as my plant is sleeping and I do not want to disturb her.
phosphate: a salt of phosphoric acid. PO4. basically, its phosphorus and oxygen. Potash is a water soluble potassium. basically, you got some PK i there, and your plants need micro nutes. overall the plant looks healthy, but investing
a few bucks in a good bottle of micro nutes would go a long way. perhaps something else with a high phosphorus percentage (not just for flowering, but early seedlings/clones), i wouldnt worry and freak out. just go get some other bottles of goodies. im a big fan of getting 3-5 bottles, each from various vendors, and mixing them. it takes a little more diluting til ya get the mix right, but it ensures that micro nute deficiencies are rare.
ive written it a bunch too, theres stuff at petstores for fish tank plants. in about 2 minutes i found this stuff, 15 bucks a bottle and contains: Total Nitrogen 0.07%, Available Phosphate ( P2O5) 0.01%, Soluble Potash 0.37%, Calcium (Ca) 0.14%, Magnesium (Mg) 0.11%, Sulfur (S) 0.2773%, Boron (B) 0.009%, Chlorine (Cl) 1.15%, Cobalt (Co) 0.0004%, Copper (Cu) 0.0001%, Iron (Fe) 0.32%, Manganese (Mn) 0.0118%, Molybdenum (Mo) 0.0009%, Sodium (Na) 0.13%, Zinc (Zn) 0.0007%. <- thats low on NPK but has 12 micro nutes for 15 bucks! (
http://www.petsmart.com/product/index.jsp?productId=4368194 ) theres tons of these bottles on the petsmart site, and most of them will work fine (make sure they are for tropical plants, and dilute them a bit more then recommended at the start). ive done this for years and rarely get deficiencies. im usually in a battle between just right and a lil overfed on nitrogen =).
edit: my bottle of this stuff says 1 capful (5ML) for 40 liters. so thats about 1ML for 8 liters. i go kinda heavy (ok apparently really heavy) i do 1ML for 2liters... lol. but it works great! 1ML per 2liter bottle of solution for the plants... the bottle i have, i bought a few months ago and its still over 1/2 full. trust me, its worth every penny of the 10-15 bucks. and its safe for fish to swim around in, so i figure its safe for plants i smoke. ( i do stop using it 2 weeks before harvest, but i havent noticed any odd taste, or tail growing, or wierd side effect)
