hydroponic plant pests | Plant diseases | Urban Gardening, Terrace gardening and Hydroponics

sir i grow hydroponic cucumber and bitterguord one month old .i have got pests in the leaves and cocopeat.i got this within 5 days.they r extensive what to do
1.https://lh4.googleusercontent.com/-_i6hu0cTo80/VD3ZSzkzUTI/AAAAAAAAA-M/axrx5zxMCY0/h120/pest1%2B%281%29.jpg
2.https://lh5.googleusercontent.com/-gp2LvSMAc8E/VD3bL_TkuOI/AAAAAAAAA-Y/L8E8SLm54Ak/h120/pest1%2B%282%29.jpg
3.https://lh4.googleusercontent.com/-C2dOd6_KtuE/VD3dcoPs4qI/AAAAAAAAA-k/5a2kIKBqW84/h120/pest1%2B%283%29.jpg