Around here the pine bark mix at Home Depot that works is the #302 Golden Trophy bags. I've been using this for the last 4 or 5 years. The only problem is that the #302 bags vary significantly from pallet to pallet. You need to check an open bag and make sure. If the chunks are small then the entire pallet is probably OK. If not the bags in the entire pallet is not usable. I got burned this year in my first buy and had to unload all the bags to someone's in ground garden (after a harsh winter I wasn't thinking straight :-). The bags were wet and the chunks seemed small after a quick inspection but after getting them home they stunk (which I heard was not good) and had a lot of sticks and bigger chunks hidden in them. A week later I went to a different Home Depot and found a pallet of perfect #302 pine bark and loaded up as many bags that will fit into the van. A couple of years ago the good pallet of #302 was behind a bad pallet which required me to climb over the bad pallet to get to the good pallet. The employees at Home Depot must have thought I was nuts. Last year I found #302 Golden Trophy at Menards with the same pallet to pallet differences but this year Menards doesn't seem to carry it.

Am I reading that correctly - you are in Orange County, CA, right? If so and you're using county water then your water quality looks great to me. If I'm looking at the right report (see here) then you have pH ~8 with ~16 ppm of Mg and ~48 ppm of Ca and total alkalinity of ~120 (180 as CaCO3 equiv). Your alkalinity is on the high side but the rest of the report looks great (for plants, I wouldn't drink it). 1 tsp of FP in 1 gallon of water will give you ~6 ppm of Mg and ~25 ppm of Ca. I mention this because your water has a good ratio of Ca:Mg and it already has both in higher levels than you'd get with typical usage of the liquid fertilizer most people around here talk about. To answer your question directly: no. The mixes are not neutral. The gritty mix will be closer to 7 than the 5-1-1 (which will be more acidic) but *it doesn't matter.* The pH of your mix initially has very little to do with the pH levels your mix will maintain over time. In containers the soil pH will be determined mostly by the pH and alkalinity of the water you use and by the type of fertilizer you use and its ratio of ammonium to nitrate (*and* the rate at which the plant is taking up both of those nutrients which can vary depending on temperature, cultivar, etc). You should basically assume that the initial pH of the mix itself is of no consequence when it comes to determining the pH of your soil over the long term. You do need to pay attention to the initial pH but only because if you transplant something into the mix you want the roots to function reasonably well from the get-go. All this means is that you need to raise the pH of the bark or peat slightly so they are more friendly to transplants - the directions for doing that are built into the 5-1-1. I grow citrus trees in both mixes. Either will work for you and there are pluses and minuses to both. In terms of pH and nutrient availability you will find that the 5-1-1 is slightly more forgiving than the gritty mix. At your pH and alkalinity if you grow citrus trees in containers you will almost certainly develop Mn and Zn deficiency even if you use something like FP (which, again: you do not need to do based on your water quality). You could avoid this by acidulating your water or by using foliar applications of Manganase Sulfate and Zinc Sulfate (1.5 g per gallon and 1 g per gallon respectively - they can be mixed and applied to new growth on plants showing deficiencies). Just looking again at your water report you also have adequate/luxury levels of B, S, Cl, Na, & Cu. Nickel will be in your soil via the bark and or peat and you likely don't need to add any. All your water may be missing is: Mo, Zn, Mn, & Fe. Were I you I would use a straight 5-1-3 fertilizer and then manage the micros as needed myself. You will find it much cheaper than the usual suggestion. You could also go with Jack's Professional 25-5-15 High Performance and you wouldn't have to manage your micros as often (you will still get Zn and Mn deficiency at your pH unless you acidulate or use a serious acid reaction fertilizer - but then you will blow your NPK ratios). The cheapest and easiest option would be to use the Jack's (or another 5-1-3 with Mo and Fe) and then use the foliar sprays 1-3 times a year. If you acidulate your water I wouldn't use sulfuric - you have a ton of S in there already. Maybe citric or vinegar (don't use phosphoric, nitric is dangerous). This will be moderately expensive and moderately time consuming even with a chemical injector. Do yourself a favor and avoid the expense of Foliage Pro with your water. You will be correcting micro issues in any case and you have better Ca/Mg/S than the fertilizer can offer you anyway.

@greenman28, I live in Daly City, ca. I just transplanted my new meyer lemon tree with Dr. earths fruit tree soil and added micro fir bark with perlite to a bigger pot. I wish I would of known about the 5-1-1 or the gritty mix before I bought Dr. earths Soil. I hope it will do good in the mix I put it in (crossing fingers) once it was potted I immediately watered it with vitamin B1 to prevent transplant shock. Have you or Al thought of possibly collaborating and starting you own bagged growing medium business? Your very knowledgeable and I've read Great reviews on the 5-1-1 or gritty mix. Also i poured a capful of osmocote slow release fertilizer. Is it ok that isn't the plus kind? Thank you in advance.

@Nil13 made reference to the Whitcomb 311 mix, which is an earlier historical attempt to create a more coarse potting soil for container plants. I think it is extremely helpful to read a document written by Carl Whitcomb that explains how he came on this formula by accident. Essentially what happened is he accidentally left nine test pots under a bench and everyone forgot they were there. They had successfully nearly killed all of their test plants by watering in a normal potting soil mix and the unwatered plants started to do very well. What I have started to realize is that any plant can do well in many different soil mixes, if you are able to carefully control the watering. This explains why so many people on this forum claim gritty mix is not as good for their succulents as their (fill in some random horrible soil with lots of small particles) mix. Inevitably those people are growing their plants indoors. They have enormous experience with their plant type and they know exactly when to water the plant. So that is the case of a very skilled gardener compensating for a very bad soil. What gritty mix does for me is let me grow succulents outside in very abusive weather conditions, without the plant dying. A plant can get a week of rain and it will still drain well. During Summer, gritty mix will tolerate a bit of overwatering, although you still really need to pay attention to not overwatering. Whether you make your 511 mix with perlite/peat, or with two parts Turface, or with lava and pumice, is probably in the big picture not going to be the deciding factor in whether your plants grow well or not. Success can be add with any of those mixes because the size of the particles allows the roots to breathe and prevents capillary action of water from bring the perched water table to the top of the pot and drowning the roots. Fine-tuning how you make 511 is a question of matching the plant type to the moisture retention of the soil and to the watering habit and climate exposure. Any 511 variant is going to do better than almost any commercial potting soil because of the larger particles used in the majority of the mix.