Yellow tips help

So I noticed 2 of my 4 plants are getting yellow tips in about 20 leaves of each I'm very new to the grow community but i think it’s nitrogen toxicity the ppm of the water is 800 in there 5th week and the runout water ppm is 1000 i do 30-10-10 and the ph of soil is 7 it’s peatmoss with perlite any ideas what to do ?

Nutrient burn

30-10-10? That's a lot of nitrogen.

I'd say cutting back on the feed is warranted. That's not a very good NPK ratio to begin with. That sounds more like a fertilizer for acid loving plants like evergreens, rhododendrons, blueberries, etc... They don't look that bad yet but you'll want to change to something other than 30-10-10.

This ^

xtsho said:

30-10-10? That's a lot of nitrogen.

I'd say cutting back on the feed is warranted. That's not a very good NPK ratio to begin with. That sounds more like a fertilizer for acid loving plants like evergreens, rhododendrons, blueberries, etc... They don't look that bad yet but you'll want to change to something other than 30-10-10.

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Unfortunately i live in a country with no many options but i have 15-10-35 and liquid fertilizer with 4-9-11

Mishari said:

Unfortunately i live in a country with no many options but i have 15-10-35 and liquid fertilizer with 4-9-11

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I would use the 15-10-35 at reduced strength for veg and then when the plants start flowering switch to the 4-9-11. And also, you do not need to feed every watering. You want to water with just plain water as well. Feed-water-feed-water or feed-water-water-feed-water-water. Depending on how the plants look.

I see the plant on the left is already showing female preflowers. You'll be ready to flower soon so keep your plants healthy and cut back on the strength of your nutrients a little. Good luck.

Edit:

I see that you say you have a liquid fertilizer at 4-9-11. So I'm assuming the 30-10-10 and 15-10-35 are dry fertilizers. Is that correct. The 30-10-10 you're using is it Orchid food?

xtsho said:

I would use the 15-10-35 at reduced strength for veg and then when the plants start flowering switch to the 4-9-11. And also, you do not need to feed every watering. You want to water with just plain water as well. Feed-water-feed-water or feed-water-water-feed-water-water. Depending on how the plants look.

I see the plant on the left is already showing female preflowers. You'll be ready to flower soon so keep your plants healthy and cut back on the strength of your nutrients a little. Good luck.

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I cannot thank you enough I'm great full