Why do you need checks valves?
I’ve heard this same argument but I don’t give it any weight. Peristaltic pumps always have at least one (sometimes more) head compressing the tubing. Even with gravity there won’t be any coming out. It’s like holding liquid in a straw when you put your finger over the end of it. Unless the tube is large enough for the liquid to slide down one side of it, you’re good.I read online that when the pumps stops after a cycle, the fluid in the incoming tube will drop off by gravity. This may introduce inconsistency in dosage next time it spins up, because the drop may not be consistent among the 3 pumps.
@scuzy I will test for phosphate this weekend, which I think indicate my nutrient level? I do get skimates and some hair algae - that implies nutrient, right?
@Vhuang168 If my system is still changing, isn’t better using water changes to buy time for it to mature/stablize, instead of chasing ICP numbers right away?
A different question- I am debating Marine Pure (leeching aluminum) vs Siporax (raises silicates level). Any comments about living with elevated silicate level?