The Tropical Fruit Forum

brian is correct.  The value of MGGS depends on the area you live at.  Here in Colorado MGGS formulation is quite good.  I have never had a problem with it.  In other areas not so much.  Currently I have a tree planted in a 50/50 blend of Turface MVP and MGGS and it is growing quite well.  It has been in that medium going on two years with no apparent breakdown in texture.

The damage looks to large for spider mites,  To me it looks like scale.  Either way a spray with neem oil or a horticulture oil  would take care of either insect.  As 1rainman wrote water spray would eliminate spider mites, but water would not eliminate scale.

They look normal.  One of the leaves looks to be variegated.  The all white one will die because it has no chlorophyll to produce energy.   

I have a Page mandarin planted in the ground.  It is said that Page mandarins produce the finest orange juice in the world.  Page trees are very productive, with fruit almost the size of a clementine mandarin, seedless and VERY juicy.  It is a good choice..

Ponkan is excellent, but contains seeds. Xie Shan was declared the best tasting citrus at the two Citrus Expo contests I attended. Owari and Shiranui have been favorites of many people for a long time.

All most all sweet Oranges, true Grapefruit, Lemons, Limes, pure mandarins, (other than King and Clementine) most Tangelos, hybrid Tangerines and Tangors (except temple) are true to type from seed.

Very few of the Lane Late flowers will produce fruit.  Therefore, if you wait until the bloom is over to remove the new (if any) fruit, you will have a much easier time doing so.

The warmer the local climate, the less amount of red coloring in Moro .

Exactly

Our supermarket sells both organic grown grapefruit, and conventual grapefruit.  Always, the organic grapefruit attain only about the size of an Navel orange.

Poncirusguy, wait until you fruit becomes ripe and deep red in color.  Your fruit will have no acidity.

Some old citrus trees reach the age of 100 to 125 years of age.  The Citrus Industry, a book published by the University of California at Riverside California states a few citrus trees living much longer.   Ferrari, described a tree in the ancient convent garden of Divine Balbilna which was said to be five hundred years old, one half of which  was dead and the other half having the vigor of an old man: but that the tree may provide for its perpetuity, has sent forth two little trees from its roots, the heirs of its longevity.  The best known instances of great age attained by citrus tees are those of the trees in the garden of he Alcazar in Seville and the tree which grows in the court of the Convent of St. Sabina in Rome.