Septoria will infect other solanaceus fruit like peppers, eggplant and other nightshades including the weedy relatives. Fungal spores can spread by the wind and persist on tools, equipment, boots, stakes and cages.
Copper should be effective on septoria as well, but you need to scout the area for alternate hosts and get rid of them too. Bordeaux mix, or copper sulfate and chlorothalonil should work if sprayed preventively weekly when environmental conditions, wet and humid weather favor the disease.
Although I do not like to keep too many chemicals around, it might be better to alternate your fungal sprays and combinations as well until you find a good combination. You will need to check out which ones are compatible.
Unfortunately there are no cultivars resistant to septora, so sanitation, preventive fungal sprays, and crop rotation (A four year rotation out of any of the solanaceous family).
Blight-Resistant Tomato Varieties for 2014
Defiant â€“ Determinate (bush) plants produce round, medium size red fruits, rated at 70 days to maturity.
Iron Lady â€“ Determinate (bush) plants produce round, medium size red fruits, rated at 75 days to maturity.
Jasper â€“ Tall indeterminate (cordon) plants bear trusses of red cherry tomatoes starting 60 days after planting. An All America Selections winner and RHS Award of Merit.
Lemon Drop â€“ Indeterminate (cordon) plants bear hundreds of small yellow-green tomatoes in 80 to 90 days. Open-pollinated heirloom variety, a sport of 'Snow White' cherry.
Matt's Wild Cherry â€“ Sprawling indeterminate (cordon) plants bear scads of tiny red cherry tomatoes starting 55 to 60 days after planting. Open-pollinated heirloom from Mexico.
Mountain Magic â€“ Vigorous indeterminate (cordon) large red cherry tomatoes, rated at 75 days to maturity.
Mountain Merit â€“ Determinate plants produce large red round fruits about 75 days after planting. An All-America Selection winner.
Mr. Stripey â€“ Indeterminate (cordon) plants produce medium size round fruits marbled with red and yellow in about 80 days. Open pollinated heirloom.
Plum Regal â€“ Determinate plants produce red plum tomatoes weighing 3 to 4 ounces each, rated at 80 days to maturity.
Between the two Septoria is probably the better one to have since phythoptora will remain in the air and the soil for years. This publication shows the difference between the spots side by side.
I would not rule out phythoptora especially if it is in your area and your are buying transplants from the stores.
I have not been able to get sweet basil to grow except for a brief time last year. Then Walmart was selling basil that were infected with downy mildew and within two weeks my basil was infested again and I had to pull them.
Happy gardening in Hawaii. Gardens are where people grow.