Just want to share my DIY Dosing using extra fev marine bottles. Sa mga walang magawa at madaming bote ni fev marine... gumawa ako ng pang dosing ko. Maliit lang naman kasi 250ml lang yung bottle pero kung wala naman kayo gagawin sa bote at wala rin kayong pang 2 part dosing, baka makatulong lang ito
This is the 250ml Bottle I got from fev marine.
1. Remove the inner cap of the bottle.
2. The emboss part at the middle will be your guide. Drill that whole thing.
3. Insert air hose.
4. Add glass glue or any glue you may want just to prevent it from spilling from the sides.
5. add valve from to control the drip and drill a hole on the top part of the bottle where you can put the liquid you want to dose.
HTH