Diving tomato seedlings is necessary for a stronger formation of root mass in the plant. How and how to do preventive treatment for diseases, see this video.

How to fertilize seedlings. How to feed tomato and pepper seedlings.    • Чем удобрить рассаду. Как подкормить ...  
Seedlings are simple. Seedlings from A to Z    • Рассада это просто. Рассада от А до Я