Electrolytes?

sezie

I'm a professional singer, I've lost my voice recently due to not resting it enough. So I'm drinking a lot of water to stay hydrated, between 8 and 10 litres a day(1.7 to 2.2 gallons). I've upped my exercise too, burning around 600/700 calories at the gym 5 or 6 times a week. I'm worried about an electrolyte imbalance, or will what I eat counteract that? I have a juice for breakfast(homemade) either a green juice(apples, pineapple, cucumber, celery, ginger, lime) or beetroot, orange, cucumber etc. I have a salad for lunch with oily fish or avocado and whole meal pitta bread, then for dinner I have fish or beans with vegetables and brown rice. Should I be thinking about replenishing electrolytes more?

Not after any calorie advice, or any juicing naysayers. I just want to make sure I'm not drinking too much water/diluting my body salts. I will add that I feel great(apart from my crappy voice) so I'm probably alright. Any advice is greatly appreciated though.